2000 Pontiac Montana With Insufficient Voltage for Turn Signal/Brake Lights at Trailer Connector

Updated 01/19/2010 | Published 01/16/2010

Question:

I have a 2000 Montana with a 4 wire connector. what should the voltage be on each terminal from the van? I have 12-13 volts on the running lights brown wire and 6-7 volts on the Brake and turn signal wires yellow or green wire is this correct? The running lights work but the brake and turn signals dont. I have a foldup trailer so I ran a ground wire to both tail lights fron the hitch area. Could I still have a ground problem?

asked by: JAMES S

Expert Reply:

It sounds like you have the ground taken care of. Are you using a tail light converter? Part # C55355 is the converter offered for your vehicle. The factory does provide the port for the towing wiring, but a converter is still needed.
If you have a converter installed already, I would recommend testing the wires on the input side of the converter. You should have 12-volts entering and exiting the converter while each function is activated.

expert reply by: Mike L