Results 1 to 5 of 5

Thread: tail light doesn't work/parking light does

  1. #1
    Ran Bush
    Join Date
    Jan 2006
    Location
    Nor Cal
    Posts
    79

    tail light doesn't work/parking light does

    On my '01 R1100 RT-P, a riding partner told me that my tail light wasn't lit when I was riding the other day.

    I've been messing with it this weekend, and I have found that the tail light bulb does light up when the ignition switch is in the parking light position. So the bulb is good. Just not when the bike is running. All fuses test good, relays are good.

    I have tried to trace the circuit with Doug Raymond's excellent schematics, but nothing jumps out at me. I also know that the RT-P's often get re-wired by each agency for various lights, sirens and other equipment.

    Any thoughts on what else to look at?
    Ran Bush in NorCal

  2. #2
    Registered User
    Join Date
    Sep 2006
    Location
    Diamondhead, MS
    Posts
    1,054
    Isn't it a dual filiment bulb ? Have you looked at it ?
    '03 R1150R, '03 F650GS, '97DR200SE,'78 Honda CT-90, '77Honda CT-90

  3. #3
    Registered User ANDYVH's Avatar
    Join Date
    Jun 2005
    Location
    Green Bay, WI
    Posts
    2,376
    Check the wiring at the bottom of the ignition switch. It flexes there whenever you turn the handlebar in either direction. I found this out because at times I had no taillight, but the brake light worked fine on ,y 94 R1100RS.

    I found out the wiring going into the ignition switch base had cracked and was making partial contact sometimes. I re-soldered the wire best I could for now but I did get a replacement switch assembly from BeemerBoneYard.com.

    There is a very small allen screw that retains the switch assembly to the bottom of the ignition switch housing. It is covered in a red dot of paint. Turn that screw ONLY enough to get the switch assembly loose. Once the switch is out it may be easy to repair the busted wire.
    Get trained! The best "performance" upgrade you can get is YOU. Visit msf-usa.org for training info.

  4. #4
    Ran Bush
    Join Date
    Jan 2006
    Location
    Nor Cal
    Posts
    79
    Thanks for the input, guys.

    Yes, the tail light bulb is a single-filament 5008.

    ANDYVH - good suggestion; I'll take a look at the switch wiring this weekend.
    Ran Bush in NorCal

  5. #5
    On the Road
    Join Date
    Jul 2007
    Location
    Indianapolis, IN
    Posts
    87
    Quote Originally Posted by ANDYVH View Post
    Check the wiring at the bottom of the ignition switch. It flexes there whenever you turn the handlebar in either direction. I found this out because at times I had no taillight, but the brake light worked fine on ,y 94 R1100RS.

    I found out the wiring going into the ignition switch base had cracked and was making partial contact sometimes. I re-soldered the wire best I could for now but I did get a replacement switch assembly from BeemerBoneYard.com.

    There is a very small allen screw that retains the switch assembly to the bottom of the ignition switch housing. It is covered in a red dot of paint. Turn that screw ONLY enough to get the switch assembly loose. Once the switch is out it may be easy to repair the busted wire.
    Andyvh, you just saved my sanity! Got home from a trip yesterday and noticed my aux lights weren't working - thought it was the relay then noticed the tail light was out too (relay powered by tail light). Sometimes I'd turn on the key and they'd both work, sometimes not. After 4 hours of diagnostics I came in and checked the moa board and found your post. Went back out to the garage and if I jiggle the wiring under the switch stuff comes on.

    I have an 95 RS. Did you have to take the front fairing off to get to the switch? I'm not seeing how to get to the wiring connectors without doing some tear down. Any advice is appreciated - thanks!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •