In this video, we will review a 7-way trailer wiring harness (U-Haul p/n# 47185), what makes it different from a 4-flat and how to locate and test it's functions. This is one of the most common types of trailer wiring and understanding how it works can help you troubleshoot problems down the road.

To purchase this wiring harness and other towing accessories for your vehicle, visit https://www.uhaul.com/trailer-hitches...

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