Bonneville America Forums Forums Technical Forums General Tech Back brake light is sticking!

Any ideas how to stop it happening or has someone had the same problem? Front brake lever etc looks OK, but I can't find the brake light switch for the rear brake. I have a 2003 with 34K on it so I'm guessing it's no more than a dirty switch. Thanks for any help.

Check the socket for the bulb. Might have a loose wire or tweaked connection...Karens bike did. Easy fix.

There is a hose from the master cylinder to a hex adapter bolted to the frame. The switch screws into the other end of this adapter and holds the hose to the rear brake in place.
If the brake system has never been flushed and refilled with fresh fluid, it is possible that some crud has collected in the switch fluid inlet and blocking the pressurized fluid from coming back out.

My rear brake switch broke (stuck on) in 2003. Dealer replaced it under warranty. I was on a road trip at the time and simply unplugged the wires from the switch. Since I always use my front brakes I didn't have to worry about my brake light not coming on.

P.S. the switch is towards the back underneath the bike, just in front of the swingarm. Find the brakeline on the swingarm and trace it back. Didn't even have to jack up the bike to find it.