Sure; change the story on me. So are you saying you have an early production '96 or a '95 model? They're totally different. I have a '95 Grand Caravan and it has three or four center brake lights that are always burning out. I have a service manual for that but for a '96 the closest I have is a manual for a '97 which should be the same.
If your test light turns on when you press the brake pedal, that would have to be on the white / tan wire. On the '96 the brake and turn signals use different bulbs and circuits so the turn signal switch is not part of the brake light system. That leaves a break in the wire but it could be in the wire going to the bulbs or a corroded common ground wire. This is where the center lights would provide the clue. They use one ground wire and both of the corner brake lights share a common ground connection along with the backup lights.
Check if the backup lights work. If they do not, we have to find that ground connection. If they do, we know the ground is okay and we have to diagnose the brake supply wire.
Another valuable test is to have a helper push the brake pedal, or place a stick between it and the seat, then measure the voltage at one of the brake light sockets. That will be the white / tan wire at either socket.
Saturday, May 25th, 2013 AT 6:36 PM