Solution for 12 Volt Accessory Circuit Not Active on a Truck

Question:

I have trailer lights always on but no power on the auxiliary connection, this happens on every trailer i hook, so i assume the problem is on the truck. I drive a 2002 Freightliner Century, checked all fuses and they are ok. thanks

asked by: Cesar E

Expert Reply:

One option you have would be to bypass the factory wiring and run your own 12 volt circuit straight to the battery. You would need 10 gauge wire like part # 10-1-1 sold by the foot and a breaker like part # 9510. You would just run the wire from the 12 volt pin of the 7-way at the rear of the vehicle up to the positive post of the battery through the breaker. This gives you a guaranteed way to activate the circuit and eliminates any guesswork.

expert reply by: Jameson C