Hopkins 4 Bar And 7 Blade Trailer Wiring Diagram. Note that although the colors and wire sizes listed herein are common, they are not universal and actual color/size may vary by manufacturer, trailer type, and model year. I drew this crude diagram to help explain.
Normally all trailers are wired the same.
The Rv Plugs wiring is differnt than that usually the trailer plug isnt wired for backup lights,i guess you will have to wire it manually,check the color of your wire to the backup lights of your truck.
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Current trailer wiring systems can come in several varieties. The wiring diagram in the box is correct, you just have to view it properly as the manufacturer intended. I drew this crude diagram to help explain.