Brake light stuck on
Thread Starter
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1st Gear
Joined: Oct 2015
Posts: 5
Likes: 0
From: Arizona
Brake light stuck on
Hope someone can help me. I got the code for my rear break switch not working and noticed my brake light was stuck on. I figured no big deal and replaced rear switch, the light was still on so I replaced the front switch. Breaks still on. I checked both switches with volt meter and both are working.
Does anyone have any ideas what might be causing the break light to stay on?
Does anyone have any ideas what might be causing the break light to stay on?
Road Warrior
Joined: Oct 2006
Posts: 1,350
Likes: 46
I had that problem & it was in the front lever. I also had a time that the rear tire had rubbed the wiring harness that is in the rear fender & it shorted it to a power wire & stayed on.
Hope this helps.
Toby
Hope this helps.
Toby
Road Warrior
Joined: May 2005
Posts: 1,301
Likes: 24
From: Minden LA
Hope someone can help me. I got the code for my rear break switch not working and noticed my brake light was stuck on. I figured no big deal and replaced rear switch, the light was still on so I replaced the front switch. Breaks still on. I checked both switches with volt meter and both are working.
Does anyone have any ideas what might be causing the break light to stay on?
Does anyone have any ideas what might be causing the break light to stay on?
Seasoned HDF Member
Joined: Mar 2012
Posts: 100,455
Likes: 19,811
From: Centennial, CO
If you changed your levers, that could be a problem. Also, the front master cylinder plunger may not be returning all the way out to push the lever far enough to close the switch. Squirt a little lube on the plunger and work it in to see if that helps.
Thread Starter
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1st Gear
Joined: Oct 2015
Posts: 5
Likes: 0
From: Arizona
OK rechecked both switches, they're good. Checked bulb, looked OK. Checked for any frayed wires in fender, they're good. I know it's something simple, just can't find the simple
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Supporter
Joined: Sep 2006
Posts: 1,245
Likes: 69
From: Northford, CT
Disconnect the non power wire on the rear brake light switch. If the light is still on leave the key on and trace the wires again. Look under the bike on the frame by the exhaust. Move the wires around see if the light goes out.
Some place the power wire is shorted to the light wire. It could have fallen down on the exhaust and fused together or could have had something hit it by the frame and pinch the wires together.
Have read on this forum that people have had plastic wire ties come off and wires fell down on exhaust.
Some place the power wire is shorted to the light wire. It could have fallen down on the exhaust and fused together or could have had something hit it by the frame and pinch the wires together.
Have read on this forum that people have had plastic wire ties come off and wires fell down on exhaust.
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I just had that problem a week ago. My cruise was canceling out and the brake lights were stuck on. I found that my front master cylinder had gunk in it. I took it apart, cleaned everything; reservoir, piston assembly, lever pin and bushing. Refilled it, bled it off and everything is fine. Took about 1/2 an hour.
Grand HDF Member
Joined: Jan 2012
Posts: 4,459
Likes: 2,896
From: Oklahoma
99 times out of 100 this problem comes from changing grips or other work near the right switch box and the front brake light switch was damaged. So, now is the time to confess what you did to the right grip area just before you noticed the malfunction. If you have done nothing there, see if you have a brake light relay and pull it out. See if the light stays on or goes out. If the light goes out the relay is either stuck "on" or the trigger circuit is stuck "on". If you can feel the relay click when you reinstall it the relay is OK and you need to trace wires from each switch to the relay, I would start with the front switch. If you get into the switch box, make sure there is a small "V" shaped spring pushing the brake light switch toward the brake lever. If that fell out that could cause your symptom just as well as breaking the little button off the switch plunger.