My 91 Accord LX has a brake light issue. I noticed my "Brake Lamp" warning light come on and checked the lights. The high mount and right brake lights are out. However the the running lights work just fine. I have replaced ALL the brake light bulbs to keep the voltage the same for the brake lamp sensor. Still nothing. The sockets appear to be free of dirt and corrosion, I as well as wiggled the wires around while the brake was being depressed, nothing. The brake switch seems to be fine, and seeing as how one brake light works, i assume it is. I have yet to check the wires, seeing as how it is -5 degrees and will be very cold for the next couple days. The "Brake Lamp" warning does not come on until after i press the brake, before i replaced the bulbs it was always on. Any advice?

 

You will probably have to check the wiring.

For the two bulbs that are not working you will have use a volt meter to test for 12V and ground individually at the socket. Once you know what side of the circuit is not working, then you will have to work backwards to find out what is wrong.