Trailer Wire Harness Converter

Excellent product! Sure is convenient that Wingstuff offers this product, rather than going to U Haul, like everyone else apparently has needed to do, up until now that is. My inexperience showed through when I had a virtual 99% failure rate, at first effort to light up my trailer, after everything was installed. I was very careful to follow all instructions, and when I hit the switch the first time, only one, of four trailer lights came on. In the end, the "paint" needed to be buffed off, where all ground wires were attached, and then everything lit up just great. If your trailer has a four prong flat plug, you need this product.

This unit is not fully compatible with LED trailer lights. While it is a straightforward install, none of the documentation or catalog descriptions mention that it needs a load equalizer to work with LED trailer lights. The load equalizer is part number E34-0107 and connects to the trailer turn signals.