I have a 1965 Cutlass and the brake lights do not turn on.
Tail lights work, signals work, what do you think? Any help
Will be appreciated!

 

Just make sure the fuse is OK in the panel, and even if it is, make sure the contacts are alright, tarnishing can cause a problem here. Next, locate the stoplight switch under the dash, located near the top pivot on the brake pedal, there should be a couple of wires going to a connector. Can't quite remember the colors of them, one may be an orange, but one thing for certain, one wire should have 12-volt power going to it at all times, at least when the ignition is on. Use a volt meter to see if at least one of the wires has 12 volts. When the pedal is pushed (it may be needed to give a bit of force with your hands because you will be under the dash) the other wire (possibly a white color) should now have 12-volts going to it now, meaning the stoplight switch has 'closed' the circuit, sending current up to the turn signal switch, which then distributes the current to the stop lamp filaments. Because everything else is working you say, I'd honestly think the bug lays somewhere where in between where I have been describing, including the stoplight switch itself! For actual wire colors, please check your wiring diagrams or ask the forum if somebody has a diagram. Hope this helps, Howie.

 

Brake lights and turn signals use the same wires and lamp filaments, so clearly that's not the problem. The other two choices are brake switch and turn signal switch (the turn signal switch interrupts the brake circuit to allow the same lamp filaments to flash as turn signals even with the brakes on). Pull the two wire connector off the brake light switch above the pedal. One connector should have +12V at all times. If it does, then jumper the two together to see if the brake lights come on. If they do, replace the brake switch. If not, the turn signal switch is likely bad.

 

Thanks guys! I am not to sure about all this, Not to familiar with this electical talk. Hopefully I can take a look and have somebody take care of it for me.