Brake lights not working on a 1995 ford thunderbird. tail lights work fine. cheecked lamps, fuses, and brake switch
Hi, sometimes the simplest of things can become complicated by omiting the theory of how a circuit works,
The brake light switch is merely a break in a live wire, some cars are constant live, and others rely on the ignition switch being turned to the on position for the supply to work.
You mention you have checked the above have you checked you have 12 volts at the feed wire at the brake light switch, no voltage should be rectified by looking for a secendary fuse or break in the supply, if you have 12 volt supply at the switch,next with the switch disconnected, join together both wires this will allow you to eliminate the switch, if the brake lights illuminate then the switch would be considered faulty, if it does not light move your testing to the rear of the car, at the switch you will observe the colour of the wire feeding the rear brake lights, at the rear of the car observe the wire and check for 12 volts, if not present check for break in wire, sometimes the wire can become damaged in tailgate rubbers etc where amooving part may trap or fracture the wire, it is. Most likely that this is the problem when more than one light does not light , as the rear lights and indicators are working we can assume the earthing to the light is correct, hope this is of help to you paul
Nov 06, 2011 |
1995 Ford Thunderbird