Boat Trailer Light Wiring Harness. This Harness uses the standard White, Green, Yellow, and Brown Wires to successfully connect to your side-marker and tail lights. Sailquik has made many good suggestions on this forum and Yahoo sprintervan.
Sailquik has made many good suggestions on this forum and Yahoo sprintervan. I have a wiring harness problem. It did not come equiped with the factory tow package and I want to install a trailer light wiring harness.
I have a ford pick-up boat trailer bulb broke and melted my trailer harness.
The last wire of a standard four-wire system is white -- it's used as the ground wire.
When I hooked up the boat trailer, none of the lights were working. MotoMaster LED Boat Trailer Light Kit. Get free help, tips & support from top boat trailer lights won't work.