How to Add a 7-Way to a Trailer with 5 Wires

Question:

Good, I have trailer which have 5 wires on it, and wire colours are: red, green, brown, yellow and black. and wire them on a seven pin plug trailer. Please help

asked by: Pule

Expert Reply:

In order to install a 7-way wiring harness on your trailer you are going to want to use the Trailer Wiring 7-Way Upgrade Kit part # HS381-9000. This kit comes with everything you need as it appears you do not have all of the functions needed for a 7-way with your current setup. If you are looking for something more cost effective then you could use the Pollak Black Plastic 7-Pole RV-Style Trailer Connector part # PK12706 and just add the other functions with some miscellaneous wire like part # 10-1-1.

expert reply by: Conner L