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Hey guys!

I hope you can help, because I'm at my wits end here and really am not sure what to do at this point.

I am a proud owner of a Harley Davidson Fatboy Special 2011. For the last couple of months, I've been trying to fix a srange electrical issue. For some odd incomprehensible reason, my brake light stays on all the time even when I'm not braking. I checked the wiring and it's all fine, when I disconnect the cables form the switch and hold them against each other the brake lights turns off. As soon as I hook them back up, the light goes on and stays on :(. The switch is brand new and I'm starting to suspect that this might be electroncal/software related, have any of you experienced a problem like this before?

Any help or information would be greatly appricated!

Kind regards,
Biker DE
 

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Retired citizen
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23,386 Posts
Rear brake switch ! Unplug the wires and jump them together, the light should go off.
Front brake switch ! Remove the lever and depress the switch with your finger, the light should go off. The switch tip might be broken off.
 

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If you check the service manual.
Front Brake. Pull the lever before you remove. Place a piece of folded paper (like a match book cover) into the gap at the inside edge ( toward the center of the bars). This will hold the tab away from the button when you're re-installing the switch housing and lever assembly. If you don't, the tab on the lever hits the side of the switch and it does not depress the plunger to turn the light off. After you get everything re-assembled before you tighten it down, pull the lever, remove the paper, and work the lever a few times, the light will work when you pull the lever in, and go out when you release it.


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Keep on Ridin’
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Your bike is kinda new for this to happen, but...


Sometimes the front brake master cylinder piston can accumulate dirt on the external plunger that the front brake hand lever pushes against when you apply the brake. Then it gets sticky and is slow to return and does not push the lever back far enough to push the switch to the off position. Get some aerosol brake parts cleaner and clean that plunger thoroughly. Be sure and protect your paint against any overspray.

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