4 Wire Trailer Light Schematic. You can see how the car relay switches must work. Trailers that use this are usually fairly light weight and don't have brakes or other power.
Find solutions to your wiring schematic for trailer lights question..schematic.they all differ. Once you are happy with the end result, seal all connections with. Before you tow any trailer, you should make sure it has functional trailer lights.
All lights on your trailer would have the ground wire going to the frame or steel body.
Use this as a reference when working on your boat trailer wiring.
The following trailer wiring diagram(s) and explanations are a cross between an electrical schematic and wiring on a trailer. Connect the wires from the lights to the new wiring. The ground to the bike can be a trailer ball ground or a single wire with a male/female connector to join the ground to the bike seperately from your main connector.