Check each trailer light to make sure they are working properly before each towing. If lights are not working properly check bulbs or wiring and take corrective measures before towing. Submerging the lights in water can cause corrosion. The contacts may become corrosive and therefore not allowing electric current to the lights. A simple movement of the light against the contacts will usually re-gain light function. Electrical grease comes on the lights from the factory, which helps corrosion but will need re-application over time. Wire Code For Trailer System: Brown wire=tail / running lights. Yellow wire=left turn signal. Green wire= right turn signal. Red wire (if equipped) =hook into back up lights of towing vehicle for “disc brake” equipped trailers. White wire=ground.
