I replaced the bulb, the switch. with a dmm can see the switch is working. I need to know how the brake light should be wired. unfortunately, the current wiring does not correspond with the manual because previous owner upgraded from drum to disc brakes and re-wired using black or blue colored wires. Any info or advice would be greatly appreciated. Thanks!
Brake Light Always On
- Thread starter 72 xlch
- Start date
cdn-bigfoot
Junior Member
I would meter them out.
OR
Temporarily connect your tail light with an extra length of wire and either alligator clips or just twist the wires together. Turn on ignition and try.
OR
Temporarily connect your tail light with an extra length of wire and either alligator clips or just twist the wires together. Turn on ignition and try.
Common to both stop light circuits is the wiring from the fuse block (battery power source), and the single wiring going from that main harness routed under the fender above the rear tire to the brake light & license plate connections. Of course there is the brake light switch in the brake master cylinder up front, and there is a switch in the brake pedal or master cylinder area as well so you could have a parallel sneak current path, so the light is on all the time. Sticking or shorted switch due to water intrusion is common.
Use the basic diagram as a guide...
Use the basic diagram as a guide...
Last edited:
Thank you everyone for your help! In the process of troubleshooting this, lite socket wires pulled out, Also broke a battery box/regulator mount that had corroded from battery acid. I metered all wires, re-terminated all old connections. Went to a great harley salvage shop, got a new(er) bulb socket, new bat box mounts. Brake lite now operates properly!:guitar Thanks again for the help!