Harley davidson ignition coil troubleshooting. This is how to troubleshoot a single fire coil.

Harley davidson ignition coil troubleshooting. Perfect for anyone building their own custom wiring harness or looking to modify/repair an existing wiring harness Dec 23, 2015 · Harley Davidson Softail: Electrical Diagnostic Guide Late model Softails use a complex network of computers to monitor the engine, transmission, and braking system. A spark occurs at the correct time to create optimum engine power. Step-by-step instructions and diagrams to help you install or repair your ignition wiring. The ignition switch is an important component of any vehicle’s electrical system, including a Harley-Davidson motorcycle. There’s no spark, even though I installed a new ignition coil. Jan 31, 2022 · Hi Folks, I have an electrical problem with my 2003 88cube SoftailI have lost spark to my plugs, the problem started intermittentlywouldn't start then The HI-4 ignition system is intended for use with Harley-Davidson® motorcycles. Looking for more insights on Problems? You may find this post valuable. Get the Harley Davidson ignition switch wiring diagram to easily troubleshoot and fix any ignition switch issues. A weak one or one with a high voltage leak is more common. This engine-related performance part is not legal for sale or use in California on pollution-controlled motor vehicles. accepts no responsibility for improper installation. Jan 15, 2024 · What Is A Harley Davidson System Relay? A Harley Davidson system relay is an electrical component that controls the flow of current to various systems, such as the ignition or starter. V-Twin Mfg. Eliminate the guesswork of finding the proper connector required to use an Harley Davidson M8 Ignition Coil. Measure the primary resistance between the coil’s small terminals and the secondary resistance between the spark plug terminals. Jun 4, 2014 · I have a custom softail with a stroked evo motor with some compression, cam and head work. Learn essential techniques using multimeters and specialized tools to diagnose common issues like weak sparks and overheating. com Jul 23, 2023 · Here, we will cover Harley Davidson Ignition Coil Problems and solutions. Apr 18, 2017 · If the coil had good strong spark to both plugs when testing the the problem lies with the sending signal which indicates that the Ignition Module may be the culprit. Seeming like it may be the ignition coil, I replaced that with this one : Drag Specialties Ignition Learn how to complete a Harley Davidson ignition coil test to make sure your coil is performing properly. Recently, I started getting misfires, backfires, and less fuel economy. How to troubleshoot your ignition system including the electronics, points, coil, spark plugs and spark plug wires. Understand the different components and connections involved in the ignition switch wiring, and get insights on common issues and solutions. Connector and Wiring Changes on 1994 FLT and XLH Models 2. Explore step-by-step instructions and diagrams for smooth troubleshooting and successful repairs. A common cause of your issue is loose coil mounts or cracked mounts. The high voltage output of […] One such problem frequently faced by Harley owners relates to the ignition switch. Then attach a wire to the ignition (ign) terminal and touch ground and remove. Set the meter to Rx10,000: Test the secondary windings - touch one test lead to Very likely a between the ignition itself & the coil. In this video, I show how to run through all potential cranks with no spark causes without using special/expensive tools. That cover requires special headless rivets so that when the nail is broken from the rivet no loose pieces are left inside the cover. Dyna high tech coils for Harley-Davidson Big Twins and Sportsters are American made, top quality performance coils. I am running a Harley Davidson single fire coil. After the install I talk abou Jun 25, 2025 · To test a Harley coil, use a multimeter set to the ohms setting. It has a screaming eagle May 17, 2023 · Harley Davidson system faulty starter relay problems can be caused by wiring issues, poor battery connections, corrosion on the relay itself, or even dirt or dust buildup. Aug 16, 2025 · Harley-Davidson motorcycles are known for their power, durability, and iconic design. 5 Ohms) - just checking for any broken wires. The covert system would go Mar 8, 2010 · I have the same problem with my 91 Heritage (No fire at the plugs) when I turn the ignition on I get a spark on the front plug wire. How To Check Your Harley Davidson Ignition Coil Pack, a quick how to on diagnosing your harley coil pack, so you can check it and replace it if neededebay st Troubleshooting the ignition system also requires the Harley-Davidson harness test kit (part No. It is responsible for controlling the flow of electricity to the various electrical. An improperly working ignition switch may cause starting difficulties or even prevent the motorcycle from running. Problem occured after a high speed, high RPM autobahn run (maybe 10 minutes at 8500 or more RPM). Evo ignition pickup coil and VOES explanation troubleshooting Harley Motor Rap's Garage Shop 6. There’s no need to take your Harley to a mechanic for this and you can do it yourself. Discover symptoms, causes, and expert tips. Knowing how to effectively test a Harley-Davidson ignition coil with a multimeter becomes a valuable skill for any motorcycle owner or mechanic, allowing for swift and accurate diagnosis. Test components like alternator, stator, voltage regulator, ignition coil, and starter motor for proper function. Turn the ignition switch on and place the rotor magnet next to the ignition module pickup sensor. SEE HARLEY IGNITION REPAIR VIDEO HERE Further, I show you how to take the entire ignition apart and fix the alignment problem. Jun 7, 2022 · Recognize the Harley bad coil symptoms for a prompt and reliable replacement. Some of the common Harley Davidson ignition coil problems include burned ignition coil, vehicle sputtering, misfiring, and so on. 32-9153 DYNA 2000 Dual Plug/Dual Fire W/DC2 1 COIL VT No. In particular, the wiring diagram for the ignition coils is an essential reference for troubleshooting and making electrical modifications. Address issues promptly to prevent breakdowns on the road. You want your timing advance curve to be as aggressive as possible without it pinging. My bike has a rough idle, when engine gets warm one cylinder fails ignition. Nov 4, 2023 · Hello to the community, I'm here in hopes to get help figuring out the firing problem I have on my Harley-Davidson Evo road King. I have confirmed wiring, swapped out the coil, new ignition control module plate/wiring, new plugs, swapped the plugs, new plug wires. Unplug the connector from the coil and use a test light . Allow the engine to become cool to the touch before proceeding. Aug 9, 2022 · Kevin you need a Harley service manual ! The cover you're drilling the rivets from isn't for the stator it's the ignition sensor pickup. Apr 13, 2022 · Coils that cannot produce enough current to create a spark for optimal combustion are one place to troubleshoot if your Harley-Davidson motorcycle begins to backfire. For race applications, 3 ohm coils can be used. If your Harley-Davidson is not running smoothly, then it may be due to a bad ignition coil. Check the ignition timing path for tightness. DSS-2 for 1970 and later Harley-Davidsons [The 056-2 should be used with coils having 5 ohms primary resistance for street applications. If the coil passes the test, I'll dig up and post the module test, unless it's done with a plug in scanner. 5 ohm coils wired in series (3 ohms total resistance) for race or street. #Coil #IgnitionCoil #HowTo " …more Jul 17, 2008 · The discrete ignition coil in older 12V vehicles is an amazing little pulse transformer that multiplies low voltage received from the battery or alternator to many thousands of volts when the breaker points open and close. See Sep 30, 2008 · How to check Dual Fire coils (Pre TwinCam): The ignition coil will need to be unplugged from the wiring harness at the point where the smaller wires connect to the coil. Remove the mounting screws from the ignition module and tilt it out. DYNA “S” Electronic Ignition Kit – Dual Fire VT Part No. Plug wires reversed ? Customer: I have a 2003 Sportster 1200. Inspect for any visible damage. The coil grounds through the mount, any issue with that & you get no spark. This product should only be installed by a knowledgeable and trained motorcycle technician. The coil had liquid oozing out the back and figured she Harley Davidson Ignition Coil Troubleshooting Chilton Book Company,Joseph Pellicciotti Donny’S Unauthorized Technical Guide to Harley-Davidson, 1936 to Present Donny Petersen,2016-10-29 Donny Petersen feels honored to share the wealth of his motorcycle knowledge and technical expertise. Learn the key Harley coil symptoms like stalling, misfiring, and backfiring. The reading should be low (. By using a multimeter to check resistance and continuity, you can make sure the coil is functioning properly. These problems occur and, although difficult to find at times, a series of test will help you narrow down the . Part No. The guide covers everything from inspecting spark plugs for damage or excessive wear, to checking the ignition coil and ignition control module for proper function. Expert tips for a smooth setup. The coil contains a primary winding, a slot iron core, and a secondary winding. Turn Signal Canceller (All Models) 8. Battery 7. There's a sticky in the electrical section on the procedure. Total time 15 minutes. That Shovelhead manual you have should be pretty close to the wiring on your FLH. Harley-Davidson ignition switch problems can range from minor inconveniences to major issues that prevent you from riding. The Harley ignition coil wiring diagram illustrates the connection between the battery, ignition switch, ignition coil, spark plugs, and Wiring Diagrams & Electrical Troubleshooting Guide - 1995 & 1996 All Models This document will start downloading in 0 seconds. May 18, 2013 · The ECM needs to see feedback from all the engine management sensors before it will fire the coil. Starter Motor and Relay The starter motor and relay work together to crank the engine. battery terminal and probe the A and C contacts while cranking the engine , they should flash while cranking . A higher reading indicates coil failure. There just isn't anyway to simulate the actual environment that a coil operates in. For race applications, a 3 ohm coil can be used. Also the pump only runs for 3 seconds or until the engine starts. Most electronics (i. No spark on both plugs has to be an ignition wiring issue, a bad coil or bad ignition/timing sensor. HD-41404). Cruise Control - T hrottle Cables 10. On a recent long trip the ignition system died intermitently between 60-70 mph (even the rev counter stopped) to give a jerky stop/start ride but "fixed" itself after 5-10 minutes. Ignition coil issues, however, can compromise this reputation. Jan 8, 2024 · Tackling Ignition Coil Troubles Check the spark plug connections. By understanding these common problems and their solutions, you can better maintain your motorcycle and address issues promptly. With ignition on the B contact should light the test light . Apr 20, 2015 · May need to replace if that turns out to be the case. Do not use the factory electronic ignition coil for street applications. Harley-Davidson motorcycles have a specific engine setup consisting of a series of coils attached to the spark plugs. If any component in the ignition system fails, your Harley won’t start. remove the modules, or attempt to service as this may substantially increase the repair cost and/or void the warranty. The ignition module has a red light that flashes when I crank the engine, but there’s no spark in either cylinder. 32-9152 DYNA 2000 Dual Plug/Single Fire W/DC1 1 COIL VT No. Oct 10, 2015 · -Replaced breather bolt washers -Replaced Ignition Coil -Replaced spark plugs -Replaced plug wires (custom length 10mm) - (1) 15 amp fuse The reason I replaced the coil is once I got it back to my garage I tried again to start it, I smelled something terrible and heard something sizzling. It also provides testing procedures and specifications to check the ignition system and troubleshoot any Oct 10, 2011 · Before you worry about your module, do an Ohm test on your coil, after the bike/coil is hot. Please like and subscribe. That's why most manuals end up by say to substitute a known good coil. Learn everything you need to know about Harley Davidson ignition coil wiring diagram, including how to properly connect and troubleshoot your bike's ignition system. In this article, you will get to know all about the Harley-Davidson ignition coils, how to Jun 23, 2025 · Malfunctioning ignition coils can lead to starting issues, rough idling, hesitation, and ultimately, complete engine failure. Apr 30, 2025 · Explore common Harley Davidson ignition coil problems and how to fix them fast. Set the meter to Rx10: Test the resistance of the primary windings - touch both meter leads to the terminals on the coil. Learn about Harley ignition switch wiring and how to properly install and connect the ignition switch on your Harley Davidson motorcycle. Inspect the ignition coil for physical damage. Learn how to properly wire and connect electrical components for optimal performance. Fix your ignition system today! Aug 2, 2022 · In troubleshooting ( Haynes Manual) it talks about the "Ignition Module" is this in the ECM? I checked all the wiring connections and couldn't find anything obvious but one time after unplugging and replugging everything it did "try" to start. But even the most dependable machines can run into issues over time. I'm trying to hook up this ignition pick up that a buddy of I gave to me, got a number two printed on the back where the little cup spins inside the little module Learn how to read and interpret a Harley ignition switch wiring diagram to troubleshoot and repair your motorcycle's electrical system. From custom builds to stock replacements, we have the wiring diagram you need to get your Harley running smoothly. I wouldn't put much faith in the Clymer manual. Mar 10, 2024 · 883 will not fire on the front cylinder. Sep 17, 2019 · Ignition Coils and Ballast Resistors Gas Harley Davidson COVER TABLE OF CONTENT VOLTAGE DROP TEST IGNITION SYSTEM IGNITION COIL & SPARK PLUG CABLES TEST CHARGING SYSTEM BATTERY TEST TURN SIGNAL CANCELER CRUISE CONTROL-ULTRA MODELS SOUND SYSTEM (NON-ULTRA) TROUBLESHOOTING SOUND SYSTEM TROUBLESHOOTING - FOR ULTRA MODELS TLE ULTRA SIDECAR AUDIO TROUBLESHOOTING DOMESTIC MODELS WIRING DIAGRAMS HDI WIRING Feb 23, 2025 · I'm about to buy a Sportster repair manual, any opinions on whether the Clymer or the Haynes is better ? Also, can you trust the $50 ignition coils on ebay or should I get a brand name ? Oct 12, 2023 · 1. Jul 14, 2016 · Next test if 12v and ground are good. This is how to troubleshoot a single fire coil. Wiring diagrams available for various models. Use of this Screamin’ Eagle ignition module in an on-road vehicle application will Mar 28, 2024 · If you want to "bench" test a coil, remove wires, attach a hot 12 volt to the battery (batt, +, etc. Reset ECM, clear Jun 18, 2024 · Harley Davidson motorcycles are known for their power and reliability. Some HARLEY DAVIDSON Motorcycle Manuals PDF & Electric Wiring Diagrams are above the page - XR750, Sportster, MSD Pulse, KR, XLR Racer, CRS, CRTT Sprint, CR250, 1200 Custom, Electra, Low Rider, Nightster, Road King, Ultra Classic, Wide Glide, Blackline, CVO, Iron 883, Night Rod, Rocker, Tri Glide, V-Rod Muscle, XR1200X. Doc Harley from the Service Clinic at Low Country Harley-Davidson to help you with the health of your motorcycle! This week shares a tech tip for older motorcycles with ignition in the cam cover. Spot ignition coil issues early to keep your Harley running strong. e, coils) fail completely. Sound System - FLTC-ULTR A and FLHTC-ULT R ACB/INTERCOM/REAR SPEAKERS 14. The ignition coil is a vital component that plays a significant role in the functioning of your bike’s ignition system. Jun 13, 2004 · By dropping the bowl you can also check for any sediment that may have gotten into the fuel system. User Instructions for Dyna 2000I Programmable Digital Ignition System For Harley-Davidson Motorcycles VT No. If the engine is turning over but the ECM doesn't see the timing signal from the CKP it won't start the ignition process. This is accomplished by having less windings on the primary side and more windings on the secondary side. That's your static timing. Please check out this video of how to troubleshoot your full ignition system. Jun 16, 2025 · The ignition coil amplifies the voltage from the battery and sends it to the spark plugs. Set the ohmmeter to read resistance on the “Rx1” setting. Learn all about Harley-Davidson electrical troubleshooting and Harley-specific electrical issues here with these easy-to-understand videos. Mar 18, 2025 · If you've encountered some challenges with your Harley's ignition switch, you might be facing a few unexpected hiccups during your rides. Sound System - FLTC-ULTR A and FLHTC-ULT R ACB/INTERCOM The Dyna S ignition is not user serviceable and must be returned to the factory for repair. Common causes include a clogged fuel filter, dead battery, or faulty ignition system. If one cylinder is firing, is the coil good? I replaced the end on the spark plug end and the lead looks good. as a preventative measure I got a new coil- hours and hours of searching later- coil fine my ohms meter not. They convert the battery’s low voltage to the high voltage needed to ignite the fuel. Also, just start with Curve 1 if you have a stock or mostly stock motor. Mechanic's Assistant: Just to clarify, can you specify which light it is? Does it blink initially and then remain steady? Customer: It If you own a Harley-Davidson motorcycle and are looking to troubleshoot your ignition coil, understanding the wiring diagram is crucial. The BAS sensor is functioning properly. You're issue sounds like a coil taking a crap. It may result in various problems such as in power, signal, flow, or even open circuits, and it will surely affect how your vehicle runs. You can always contact me at hdrap_1999@y Apr 30, 2021 · An ignition coil is a step up transformer taking a small voltage and making it into a large voltage. If you are experiencing no-starts, misfires, or poor acceleration, this article may help. Find the Harley coil wiring diagram and learn how to correctly wire your Harley Davidson motorcycle coil for optimal performance and reliability. When they malfunction, it can lead to a range of issues, including engine misfires, reduced power, and even stalling. Check the Battery The battery is the first thing to check when your Sportster won’t start. As a dedicated Harley owner, it’s essential to know how to test ignition coils to ensure optimal performance and prevent costly repairs. 32-9155 DYNA KIT Single Plug/Single Fire W/DC6-5 COIL This is a custom application and rider safety depends Get a comprehensive Harley ignition wiring diagram for your motorcycle to ensure proper installation and troubleshooting. Feb 2, 2004 · What would be the symptoms of a bad ignition module?Anyone had one go bad recently?Thanks for any info. The ignition coil is an electrical component that converts low-voltage current from the battery into high-voltage current for the spark plugs. Loose or corroded cables or a drained or dead battery can Apr 2, 2020 · Then, you turn the ignition on (don't start the bike though) and rotate the ignition counter-clockwise slowly until the LED light just turns off. Ignition Coil 4. With a spark plug attached to the coil and the threads of the spark plug grounded to the engine case, hold the ignition module so it if grounded. Spark Plug Cables 5. Harley Davidson Ignition Coil Troubleshooting: Donny’S Unauthorized Technical Guide to Harley-Davidson, 1936 to Present Donny Petersen,2016-10-29 Donny Petersen feels honored to share the wealth of his motorcycle knowledge and technical expertise He offers the real deal in understanding the Harley Davidson He gives workable solutions for May 4, 2019 · I have since purchased/installed a new cam sensor, Dyna 2000p ignition module, power switch, starter button, spark plug wires, spark plugs, and replaced any bad wire/connection matching what was on the bike (following the diagram for a single fire mode). DS6-1 for 1970 and later Harley-Davidsons (The DS6-1 should be used with a coil having 4 to 5 ohms primary resistance for street applications. COVER TABLE OF CONTENT VOLTAGE DROP TEST IGNITION SYSTEM IGNITION COIL & SPARK PLUG CABLES TEST CHARGING SYSTEM BATTERY TEST TURN SIGNAL CANCELER CRUISE CONTROL-ULTRA MODELS SOUND SYSTEM (NON-ULTRA) TROUBLESHOOTING SOUND SYSTEM TROUBLESHOOTING - FOR ULTRA MODELS TLE ULTRA SIDECAR AUDIO TROUBLESHOOTING DOMESTIC MODELS WIRING DIAGRAMS HDI WIRING When it comes to customizing or repairing a Harley Davidson motorcycle, having access to accurate wiring diagrams is crucial. With practical tips on testing conditions, visual inspections, and documenting results, you’ll ensure your motorcycle's ignition system operates smoothly. ) terminal. got a deal and the ignition module was included and so out of curiosity tried it and no go. Check for wear, damage, or malfunctions in electrical components. Jan 24, 2024 · How do you test a Harley Davidson ignition module? Turn off the motorcycle. However, when I disconnect the 3 pin connector going to the sensor and jumper the black/white and green wire going to the Ignition module momentarily there is no spark at the front plug wire. Bad on off switch and key switch are other possibilities as well so I would check them and eliminate them as the cause before changing the module. Aug 12, 2025 · Conclusion In summary, testing a Harley Davidson single fire coil is essential for maintaining peak performance and preventing potential issues. Whether you’re a hands-on DIY rider or simply want to understand what that check engine light means, this Apr 26, 2010 · Check to see if you have voltage at the coil connector . Do not cut off the cable. If you do have the dual coil setup, there are a few options that you could go with to give you better performance. But fear not, there are ways to address these common problems effectively. To troubleshoot a Harley Davidson no spark issue, check the spark plug, ignition coil, and wiring connections. Compare the readings to the manufacturer’s specifications to determine if the coil is working properly. Currently I have an older screaming eagle ignition that is starting to fail intermittently. Jun 29, 2012 · Ignition Coil Test Test using a Multi-Meter: Unplug the wires going to the coil and remove the spark plug caps. Go back to school and get deep into electrical theory with Bob LaRosa and the video series here! Dec 24, 2006 · I have an 89 Evo with the standard ignition coil and a Screamin Eagle control module. Enhance the overall performance of your motorcycle. Now hook the test light clip to the pos. Jul 9, 2023 · A Harley ignition system typically consists of a key switch, ignition coil, spark plug wires, and plugs. Aug 3, 2025 · Troubleshooting your Harley Davidson’s ignition module doesn’t have to be daunting. Stay tuned to learn more about the signs, causes, Part No. Oct 16, 2024 · Discover how to effectively test a Harley Davidson ignition coil to keep your motorcycle running smoothly. Step-by-step instructions and diagrams provided. Feb 18, 2025 · Explore common Harley Twin Cam engine problems, their symptoms, and potential consequences to keep your ride running smoothly. Voltage Drop Testing 13. Test the ignition coil with a multimeter. Learn more now! See full list on whitestarrides. So, don't overlook this critical step in maintaining Aug 20, 2024 · Unlock the secrets to testing Harley-Davidson ignition coils in our comprehensive guide. T LE-Ultra Sidecar Jan 16, 2024 · Discover common ignition switch problems in Harley Davidson motorcycles, how to identify them, and ways to fix or avoid these issues. Find the perfect wiring diagram for your Harley ignition system. Once those are un-plugged from the coil, use a ohm-meter to test the primary and secondary windings. Harley-Davidson Sportster Won’t Start If your Harley-Davidson Sportster doesn’t start or turn over, you may have a drained or dead battery, a bad connection, a broken ignition switch, a blocked fuel filter, or a malfunctioning starter. We will also provide tips on avoiding these issues and keeping your motorcycle running smoothly. Sound System - FLTC-ULTR A and FLHTC-ULT R ACB/INTERCOM Jul 14, 2003 · The Dyna S ignition systems do not have a mudule. Find the best Harley Evo wiring diagram for your motorcycle. Different-sized terminals are used in the connectors on a Sportster. V-Twin MFG. Ohm tested my coils for accuracy, still nothing. The measurements on the coil are within parameters. The HI-4 replaces the original equipment (OE) electronic ignition system on 1978 and later models as well as the points and mechan-ical advance on early models. I did replace Sep 26, 2024 · Struggling with Harley Davidson system relay problems? Discover common issues and effective solutions to get your bike running smoothly. In this article, we will dive into common Harley Davidson ignition switch problems, providing insight into symptoms, causes, and possible solutions. These coils provide the spark needed to ignite the fuel mixture for your Harley-Davidson motorcycle to start running. Look for signs of wear or corrosion. Want to know more? Continue reading this post. This comprehensive guide walks you through visual inspections, resistance measurements, and spark tests, while highlighting symptoms of a faulty coil like engine misfires and reduced fuel efficiency. If the download does not start, please click here. Experiencing issues with your Harley refusing to start can be Aug 12, 2018 · Take a spark tester or a spark plug with you and ride untill it stalls, unplug one spark plug wire and hook it up to the spark plug wire and ground the plug or spak tester and crank the engine over. Learn more today! This Screamin’ Eagle ignition module is intended for high-performance off-road racing applications only, and may adversely affect the motorcycle’s emissions and/or noise control systems. Sound System FLHTC 11. Jun 22, 2024 · Learn how to install, troubleshoot, and maintain your Dyna S Ignition with easy-to-follow instructions. This ignition module is designed for replacement of the original equipment ignition module on specific Harley- Davidson motorcycle models with electronic ignition. The charging system May 19, 2016 · If there's B+ at the coil it's ready to discharge to the plugs, the other side of the coil needs to see a ground signal from the ignition pickup to trigger the discharge. Ride with confidence by 2000 FLHTCUI No Spark Issue: Coil and Ignition Troubleshooting FLHTCUI often faces ignition coil failures and intermittent spark loss causing engine stalling. These systems must stay properly powered by the battery. This high voltage is necessary to ignite the air-fuel mixture in the combustion chamber, thus starting the engine. Dec 18, 2023 · But what happens when that spark begins to sputter? Ignition coil problems can snuff out your ride’s roar just as quickly as any major mechanical failure. Wiring Diagrams & Electrical Troubleshooting Guide - 1993 & 1994 All Models COVER 1. One Aug 21, 2020 · Technical Pertronix Ignition Problem Has Me Stumped Discussion in ' The Hokey Ass Message Board ' started by brianf31, Aug 21, 2020. I didn’t want to melt it out until I’m sure the coil isn’t bad. #ignitioncoil #motorcycles #repairsA quick walkthrough of replacing the Ignition Coil on a 1984-2003 Harley-Davidson Sportster. It was running fine last year and now it struggles to run on the rear cylinder of course. It's more like an upgraded points system than a sophisticated ignition module. On my bike, I'm going to be using the V-Thunder Hyprefire Covert Ignition which is fully programmable via computer software. Harley-Davidson is the leading manufacturer of motorcycles in the USA. Feb 19, 2016 · Harley Davidson Sportster: Ignition Diagnostic Guide The ignition system ignites the air/fuel mixture inside the combustion chamber. If the coil sparks and measures around 3-4 ohms, you're probably okay. This comprehensive guide will provide you Feb 1, 2025 · Curious about testing a Harley Davidson coil? Uncover the intricate process of diagnosing ignition issues and what to do if resistance levels are off. Ignition coils play a crucial role in the engine’s performance. When the key is turned on, it activates the ignition coil, which generates high-voltage electricity. Replace the ignition coil if needed. 0:00 Semi Cinematic Intro 2:56 Begin Trouble Shooting 3:42 Checking Coil 5 At times, the ignition can come out of alignment when removing the switch and the shaft won’t go back in or is stuck inside. Charging System 6. Depending on the particular part number, this module may be installed on the following models, respectively: COVER TABLE OF CONTENT VOLTAGE DROP TEST IGNITION SYSTEM IGNITION COIL & SPARK PLUG CABLES TEST CHARGING SYSTEM BATTERY TEST TURN SIGNAL CANCELER CRUISE CONTROL-ULTRA MODELS SOUND SYSTEM (NON-ULTRA) TROUBLESHOOTING SOUND SYSTEM TROUBLESHOOTING - FOR ULTRA MODELS TLE ULTRA SIDECAR AUDIO TROUBLESHOOTING DOMESTIC MODELS WIRING DIAGRAMS HDI WIRING Jul 13, 2013 · Unfortunately a coil can pass all of this with flying colors and still be bad. Sep 11, 2006 · Seems like a kind of V-Rod flu spreading around the globe, recently so many similar failure descriptions. The problem has not occured A faulty spark plug can cause your Harley Davidson to malfunction. Disconnect, by hand, the two spark plug wires from the coil. 5 - 1. Would like to hear of good options This document provides installation instructions for a Dyna S electronic ignition system on 1970 and later Harley-Davidson motorcycles. Sound Apr 11, 2017 · The small wire energizes the coil in the relay to make the contact plunger inside connect the contacts to the 2 big wires that supply current to the solenoid. The Harley Davidson Evo Coil Wiring Diagram provides a clear and detailed overview of the wiring connections and color codes for Ignition Coil 4. The Dyna S is completely housed behind the ignition cover and uses a magnetic rotor with the original spark advancer, so the factory advance curve is maintained. Todd's Tech Tip Quickies - Harley-Davidson Coil Testing - Motorcycle Electrical Troubleshooting lowbrowcustoms 112K subscribers Subscribe With the help of a multimeter you can run these simple tests to see if your coil is the offending culprit in your ignition woes. From slight inconveniences to potential safety concerns, these issues shouldn't be taken lightly. 32-7778 & 32-0801 (Includes Coil) This is a custom application and rider safety depends on proper installation. Jul 10, 2022 · If you're experiencing problems with your Harley Davidson Motorcycle performance, maybe it is because of a damaged Sportster ignition coil. A dead Harley coil is rare. Oct 6, 2024 · Ignition coils play a crucial role in the smooth functioning of your Harley-Davidson motorcycle. Get step-by-step instructions and tips for troubleshooting common wiring issues. COVER 1. I would like to put in a good ignition system but there are many out there. Set the ohmmeter to read resistance on the “Rx1000” setting. It describes removing the point ignition system, installing the Dyna S ignition assembly and rotor, wiring it to the ignition coil, and setting the timing. Harley Davidson motorcycles are known for their power and reliability. Remember, a faulty coil can lead to starting problems, rough running, and loss of power. The wiring connecting the systems together must remain intact. Mar 18, 2025 · Key Takeaways Regularly maintain and inspect battery, fuses, charging system, wiring, ignition, solenoid, rectifier, lights, and grounding. Bikes with dual plug heads can use two 1. You can disconnect the negative side of the coil and use a jumper wire from there to ground with the ignition on to check for spark. not the ignition. Blown Fuse Symptom List 12. Cruise Control - Ultra Models 9. . Jun 7, 2021 · Lost spark on my rear cylinder on an oem 6v metal coil. To test the primary Mar 8, 2024 · A Harley that turns over but won’t start typically indicates an issue with fuel, spark, or air. Ignition System 3. That bypasses everything except the spark Sep 24, 2020 · Hello, I recently bought a 2017 Sportster Iron 883 and but about 2500 miles on it in the span of a couple of months. Check the ignition coil’s secondary resistance; specs are typically 5500-7500 ohms. Here's a guide for No-Spark Troubleshooting. That’s where Diagnostic Trouble Codes (DTC) come into play, helping you identify and resolve problems before they become serious. He offers the real deal in understanding the Harley COVER 1. Ignition on not cranking I have 12V across all 3 posts, I’ve tried disconnecting the white wire to the module as well as the VOES chassis ground and wired both directly to the battery. 32-9151 DYNA 2000 Single Plug/Single Fire W/DC3 1 COIL VT No. 63K subscribers Subscribe Mar 9, 2024 · When I cycle the ignition both light illuminate then immediately cut off and do not return when moving the module. See application chart for part numbers. With the right replacement and a clear installation process, you can have your bike roaring back to life. COVER TABLE OF CONTENT VOLTAGE DROP TEST IGNITION SYSTEM IGNITION COIL & SPARK PLUG CABLES TEST CHARGING SYSTEM BATTERY TEST TURN SIGNAL CANCELER CRUISE CONTROL-ULTRA MODELS SOUND SYSTEM (NON-ULTRA) TROUBLESHOOTING SOUND SYSTEM TROUBLESHOOTING - FOR ULTRA MODELS TLE ULTRA SIDECAR AUDIO TROUBLESHOOTING DOMESTIC MODELS WIRING DIAGRAMS HDI WIRING Harley-Davidson electrical troubleshooting can be a bit of a headache. Thank you • Harley Ignition Coil, Points Jun 16, 2025 · For example, this article offers a comprehensive guide to Harley Davidson no spark troubleshooting, which includes step-by-step instructions for diagnosing and fixing common issues. 2004 Dyna Low Rider Problems How To Diagnose Relay Problems On A Harley? Read expert Harley Davidson Touring electrical system problem guides and repair how to's with photos and videos to help you maintain your bike. if there is no spark then the Ignition module would be a strong possibility. mbad iznb giojxjuxo kqqhyra utolkc pas ynzqq rpfrwhda voj mucec