Wiring A Trailer 4 Wire. Attach the ground wire to the trailer. One to two feet is good.
Strip the wire end back about a 1 2 inch and insert it into a terminal with a heat shrink tube. The 4 pin trailer uses yellow brown green and white wires. 4 6 out of 5 stars 1 210.
Attach the ground wire to the trailer.
The minimum suggested wire size for a 4 way trailer plug is 18 gauge for the turn brake and running lights. Attach the 4 wire harness s green wire to the trailer s green wire with a butt connector. Some manufacturers will use red black wires instead of brown green yellow. The basic purpose remains the.
