4 Pin Trailer. You must check the trailer manual to see if the wiring is correct, but normally the white wire is called the. Yea those are always handy for when you want to.
It will also have a wiring diagram in the package.
A number of standards prevail in North America, or parts of it, for trailer connectors, the electrical connectors between vehicles and the trailers they tow that provide a means of control for the trailers.
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The part numbers are identical on the bracket and all wiring except for the plug on the end that mates to the harness from the truck. What's the word on this adapter? A number of ISO standards cover trailer connectors, the electrical connectors between vehicles and the trailers they tow that provide a means of control for the trailers.