Want this question answered?
Should be HOT at one side of the brake light switch
Are you sure its not a ground wire?
check the play in your rear brake lever, may be too tight and activating the brake light switch. or the front brake lever may be depressing the switch in the control housing. or you have a bad switch. or, when you rewired it, after installing that cool skull tail light, you got the running light wire and the brake light wire backwards. D
It could be the ground wire, the brake light switch, a damaged wire or connector or the turn signal switch.
There should be only two wire connections on the stop light switch. You need to put a constant 12v supply to one side of the switch and the light wire itself to the other side. The switch then needs to be adjusted so that the brake pedal holds the switch in to keep the lights off. When the pedal is depressed the lights will go on. If they stay on all the time, re-adjust the brake switch.
The wire you are looking for is a white wire in the bundle that is closest to the brake pedal. Use a test light or meter to check voltage going through the wire when the pedal is pressed.
you have to pull the feed wire off the brake switch to supply power to the new third brake light. get a test light and test the wires on the brake switch....one is hot all the time the other one gets hot when you depress the pedal....that is the one you need. do not take it pull your power from the rear light it might have an intergrated turn signal wire. which would make your 3rd brake light blink.. ok.have fun! you have to pull the feed wire off the brake switch to supply power to the new third brake light. get a test light and test the wires on the brake switch....one is hot all the time the other one gets hot when you depress the pedal....that is the one you need. do not take it pull your power from the rear light it might have an intergrated turn signal wire. which would make your 3rd brake light blink.. ok.have fun!
Use a test light One wire (hot) will illuminate The other wire (cold) goes to the brake lights will not illuminate
If your attempting to install a DVD player (in dash) in your car and need to bypass the brake light wire in order to be able to play it while driving its not too difficult. the brake light wire goes hot when the brake is applyied (to power the brake light itself) the DVD player uses this wire to know when the brake light is on or off based on if the wire is "hot" or not. simply splice the wire into a constant power source like the main power wire to your in dash unit.
The switch probably turns the light out when the switch makes connection, then the light is on when there is no connection (like when the wire is not connected.) Reconnect the wire and push the switch to see if the light goes out. The switch is most likely out of adjustment or bad.
Unless this is a brake by wire system the switch should be located on the upper end of the brake pedal arm.
Check for power at brake light switch Check for power and ground at the brake light sockets open wire?