I agree, always replace the wires when you have problems. The more splices you have the more problems you will have. Here are a few things that I do.
1. Make sure you run good grounds to every light. This means grinding a bare spot of steel on the frame where you put your self tapping screw.
2. Always cover this bare spot of steel & screw with liquid Electric tape (comes in a small can at Shucks, Wal-Mart, NAPA).
http://www.plastidip.com/home_solutions/Liquid_Tape_-_Electrical_Insulation
3. Spend $20 extra for the LED kit! The lights wont burn out as fast or easy (Alaska frost heaves, pot holes etc are hard on trailer lights).
4. I use this rule of thumb to remember what wire goes where (4 way only).
-
Yellow wire- When your driving
Yellow stripe on center line of road, so this would be your left turn.
-
Green wire-
Green grass on the right side of the road, so this is your right turn.
-Brown is always your running lights
-White is always your ground......Remember this is only on 4 wire systems.
5. Never use cheap connectors! Always use butt (Stop laughing
![Roll eyes :rolleyes: :rolleyes:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
) connectors with heat shrink ends. This will keep your connections clean & dry.
6. Zip tie everything up tight to the frame when you can. If your wires hang down the ice will hang off of them going down the road & brake your connections.
Good luck.