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Went for separate rides with "thefifthcircle" and "plybelle" last weekend. Both of them noticed that my brake light was staying on - sometimes for miles at a time.

I could not reproduce the problem in my garage. I did notice that there was some gunk buildup around the foot brake lever pivot, and all controls felt just a tad scratchy in operation - it's been awhile since I lubed everything.

I hit all pivot points and the brake light switch with WD-40 to clean them out. The next day I bought a spray can of Autozone All Purpose Lubricant at the local Autozone store (3-in-one oil is just a pain to use in some spots). Lubed everything up good. Went for a ride yesterday and checked my foot position. I definitely do not cover the foot brake when I ride - my boot is well off to the side of the lever.

Hopefully, the lube job took care of it. If it is an electrical short, I don't have the expertise to trouble shoot it. Problem is, I can't see my brake light when I ride to confirm that it is working properly.

Has anyone else experienced this problem? Any thoughts on this would be welcome.

Also, if either of you Omaha Stromtroopers have time for a ride in the near future, I'd appreciate having you follow me for a hour or so to see if the problem is fixed or not.
 

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If it only comes on when you ride and definitely isn't from a wayward foot, then it might be vibration-induced. This would explain why it comes on and off. Could be some sort of a loose connection, or wiring insulation rubbed off somewhere that only touches metal or another wire some of the time.

I also ride a 72 Triumph Bonneville that has bone shaking vibration, so such electrical problems are common with them. Try carefully following the wires from the rear brake switch looking any for loose or rusted connections, or bare spots on the insulation.

I noticed one of the wires running under the gas tank on my V-Strom was gradually getting the insulation worn away because it was routed in such a way that the tank was rubbing on it. I moved it a bit, and put a bit of electrician's tape on the worn spot. I can't remember what wire that was anymore though, but it was near the right rear of the tank and easily visible looking down when the tank was raised or off.

Bob
 
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Bob,

Good suggestion, thanks. I'm not looking forward to it, but it might come to that. Somehow I doubt that the brake pedal or switch were sticking - even though they were overdue for some lubing. The rear brake light switch is difficult to get to. It is buried behind the frame. But maybe if I pull the seat off I'll be able to see the wires. If it is from the front brake circuit - well, that will be even more challenging. :?

Come to think of it, I did have a wire short develop under the gas tank on my BMW R65 that caused the engine to cut out occasionally.
 
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Mike,

Thanks. I did look at that and I think it's OK - unless the brake pedal was sticking. Total throw for the brake pedal is not that long, but the brake light comes on just prior to the brake being engaged.
 
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