Bob LaRosa takes a moment to review a common question he gets. Why does my Harley ignition switch give me trouble?
He admits it’s a trick question because it might not be the ignition switch at all. You’ll have to look at the wiring harness as a whole and the charging system.
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Harley-Davidson® Ignition Switch Removal
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Bob teaches you how to service the spark plugs on your Harley’s engine. Although you can clean and service your old spark plugs, Bob recommends just buying new ones because they are fairly inexpensive. You should purchase gapped, Harley-only spark plugs which usually come with a gap of 38-43,000th of an inch. After applying some
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Bob and Mark teach you how to properly service important parts on your bike, including draining and replenishing the fluids, adjusting the clutch and the primary chain, inspecting the clutch cable and servicing the kickstand. They pinpoint a few problems to look for when servicing each of the parts, and give you some tips on
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When you’re adjusting the primary chain on your Sportster model, it’s always specified to adjust it in the tightest spot of its travel. Whether you use the hot or the cold measurement, Harley specifies that you do it in the tightest area. Bob teaches you a quick and simple method for locating the tightest spot
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Bob and Mark demonstrate the process for lubricating your Harley’s steering head bearings and adjusting the fall-away. As always, Bob stresses the importance of adequately prepping all bolts, consulting your user manual to be sure everything is done correctly, covering any painted areas on the bike and, if possible, working with two sets of hands.
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Bob,
ya made ignition switch failure waaaaaaaaay too complicated. if switch has time/miles, like 108,000 miles on my ’01 FLSTC, then it’s probably the switch.
OK, check battery connections first, but then pull the dash, unplug switch wiring, remove switch, take out keeper-ring, & disassemble the switch. chances are you’ll find all kindsa gunk in contact area. take some ever present brake parts cleaner, paper towel, spray down all parts & dry. during re-assemble, put di-electric grease on spring-loaded contact buttons, a little H-D Super Lube on cover hinge, inside lockset, and other metal-to-metal surfaces, re-assemble, bolt back in dash, re-connect wiring, install dash. about 1 hour time.
now test it, & good possibility no more switch issues. not really a rebuild, but a cleanout. save$ $$$ installing new ignition switch.
just saying….
marklewis
Ticket 17099 I have a 2009 Heritage Classic Softtail and I want to attach a mp3/Bluetooth player identified to be for this bike. The wiring diagram has a Positive wire, Negative wire, and an ignition wire. Connecting the Pos and Neg wire no problem. However, I do not know how or where to connect the ignition wire. Please advise. Thank you for your time.
Dear William,
Thank you for contacting us. In regards to your question:
The other wire needs to be “switched power”. You should have an empty grey plug under your seat for switched accessory power.
https://www.fixmyhog.com/video/simplifying-electricity-002170/
Hope this helps.
Sincerely,
Mark
Fix My Hog Video Membership
I’ve had to replace my ignition switch 2 times in two months 2004 flhtpi 29000 miles on it
Also the acc works perfectly no power when in the ignition position