Question: What is a 7 pin wiring harness?

What is difference between a 4 pin and 7 pin trailer connector? A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer brakes (requires a brake controller in the vehicle), and a reverse light or auxiliary power circuit.

What is the difference between a 4 pin and a 7 pin?

The only real functional difference between them is that on part # 37185 the 4-pole trailer connector is located to the side of the 7-way, rather than under it as with # HM47180. Both adapters plug in at an existing 4-pole vehicle connector and re-format those lighting signals to the 7-way configuration.

What is a 7 pin harness?

The 7 pin connector incorporates a circuit for electric brakes and also a dedicated power feed. The dedicated power feed enables charging the trailer battery from the tow vehicle while driving and to keep things running in the trailer such as a compressor refrigerator. The wire size for the power feed is important.

Does a 7 pin trailer plug have reverse light?

As a 7 pin plug does not supply Reverse lights this is usually done by using the 13 pin plug.

How do you test 7 pin trailer wiring?

1:523:037-Way Trailer Wiring Review and Testing - YouTubeYouTube

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