SeaRayPilot
New Member
Purchased a new (to me) boat and trailer which needed the right tail light assembly to be replaced. It has a 5 pin flat connector which I connect to my 2019 F350 via a 7 pin -> 5 pin connector.
I replaced it with a new LED assembly. Testing the installation I get tail lights but no stop or turn signal lights.
Suspecting bad wiring, I disconnected the new light (at the 6" pigtail) and checked for voltage.
The brown lead (tail/running light) gives me 12V+
The green lead (stop/turn signal) gives me a steady 12V+ with the brake pedal depressed and a flashing 12V+ in sync with the turn signal.
I reconnect and no stop light, no turn signal.
I checked the ground lead and observe 0.1 ohms resistance between the ground lead and a point on the trailer frame.
I connect the truck to my horse trailer and all lights work fine.
Any ideas?
I replaced it with a new LED assembly. Testing the installation I get tail lights but no stop or turn signal lights.
Suspecting bad wiring, I disconnected the new light (at the 6" pigtail) and checked for voltage.
The brown lead (tail/running light) gives me 12V+
The green lead (stop/turn signal) gives me a steady 12V+ with the brake pedal depressed and a flashing 12V+ in sync with the turn signal.
I reconnect and no stop light, no turn signal.
I checked the ground lead and observe 0.1 ohms resistance between the ground lead and a point on the trailer frame.
I connect the truck to my horse trailer and all lights work fine.
Any ideas?