Reverse Lights for Trailer- RAM OEM wiring

transamz9 wrote:
Your truck plug has a dedicated ground and that is the bottom left blade when you open the little flap on the truck. I would run a dedicated ground wire to the trailer plug. Everything on my boat trailer has a ground wire that is connected to the plug. If I'm not mistaken, some lockout solenoids only have a power wire and ground through the brake line. You might be able to take a Stainless hose clamp and clamp a wire to the brake line close to the solenoid and tie it in that way.

Yep, I have a dedicated ground wire in the 7-way harness on the boat that connects the truck plug with the trailer frame for grounding. I'll have to take a another look at the solenoid to see if it has a ground wire, uses the frame for ground, or if it uses the hydraulic line. I'm glad you mentioned that because now I realize I'm not quite sure.

Kj