Author Topic: Brake light stays on  (Read 3981 times)

Offline Donmystic1

  • ^ Proficient Motobricker
  • Posts: 157
Brake light stays on
« on: March 10, 2016, 04:08:33 PM »
My 1985 K100rt's brake light stays on.occasionally I can shut the bike off and it will stay off on the next start. The fuklds are topped off. Is it a bad electrical connection.
  • Mystic, CT
  • 1985 K100, 1985 K100RS, 1986 K100RS Turbo,1985 K100RT

Offline Chaos

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  • Posts: 3157
  • Mars needs women!
Re: Brake light stays on
« Reply #1 on: March 10, 2016, 04:39:25 PM »
There is a little plunger switch by the front and back brake levers.  One of them is probably sticking.  Try squirting some silicon or wd40 on them, if lite is still stuck on unplug them one at a time to find the culprit.
  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline Donmystic1

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  • Posts: 157
Re: Brake light stays on
« Reply #2 on: March 10, 2016, 05:08:34 PM »
I'll start at those two places. Thanks
  • Mystic, CT
  • 1985 K100, 1985 K100RS, 1986 K100RS Turbo,1985 K100RT

Offline Donmystic1

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  • Posts: 157
Re: Brake light stays on
« Reply #3 on: March 11, 2016, 08:55:47 AM »
I meant to say the light on the dashboard not the actual brake light. It goes out occasionally.
  • Mystic, CT
  • 1985 K100, 1985 K100RS, 1986 K100RS Turbo,1985 K100RT

Offline Laitch

  • Faster than a speeding pullet
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Re: Brake light stays on
« Reply #4 on: March 11, 2016, 09:11:10 AM »
I meant to say the light on the dashboard not the actual brake light. It goes out occasionally.
You probably have weak wiring to the tail light assembly bulb contacts, dirty or fractured contacts, a short in the wiring to the brake lights, weak grounding or failing bulbs, Don. I've found the monitoring unit itself to be reliable.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Martin

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  • Posts: 4475
Re: Brake light stays on
« Reply #5 on: March 11, 2016, 04:17:22 PM »
The light on the dash lets you Know that your brake lights are being activated. It will stay on if either one of your brakes is not activating your rear light.
Regards Martin
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

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