Front brake light switch. Sometimes, the plunger gets gummed up, and won't spring back out. You might try cleaning with some electrical contact cleaner (Radio Shack) Other times, the proper procedure wasn't followed when installing the front master cylinder, breaking off the "nub" on the switch that works off the brake lever. If so, $17 part and some soldering. Either problem will cause the brake light not to turn off.
Answers & Comments
Front brake light switch.
Sometimes, the plunger gets gummed up, and won't spring back out. You might try cleaning with some electrical contact cleaner (Radio Shack)
Other times, the proper procedure wasn't followed when installing the front master cylinder, breaking off the "nub" on the switch that works off the brake lever. If so, $17 part and some soldering.
Either problem will cause the brake light not to turn off.