4 Prong Wiring Diagram Trailer. It plugs right into the harness on the tailights and you snake the wiring underneath the bed. Ive never seen this and have been born in the usa i have no idea There should be a wiring diagram on the dryer, or in the manufacturer's installation instructions.
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That fourth prong is a ground wire and is there for better electrical safety.
Ive never seen this and have been born in the usa i have no idea There should be a wiring diagram on the dryer, or in the manufacturer's installation instructions. A four-wire receptacle is more useful and versatile than three-wire, and you can install a matching plug on any piece of equipment. Custom wiring diagrams that don't fit in one of the other categories.