My 2006 Dodge Ram 2500 with 7 way and 4 way connectors. Here is the problem. Voltage readings for right side are right, 12.75 volts. Left side is only 11.14 volts. so no lights on that side. And, when the door is open with the cab lights on, it still carries voltage. Dies when cab light goes out. Could this be a factory wiring problem or am I missing something here. Sure would appreciate your input.
Expert Reply:
Is the 4 and 7 way trailer connector factory installed? If it is aftermarket and has been attached to the vehicle wiring, it appears somebody tapped into the wrong wire, which would explain why the cab lights would affect the trailer lights. I would trace and check the wiring running to the connector on the bumper using a circuit tester, like part # 40376.
expert reply by: Mike
