Originally posted by Bertram65
There is a 4 wire flat trailer light connector under the bumper hanging off the wireing harness in addition to the 7 wire round in the bumper. No need for a 7 to 4 adapter.
But what about the 5 pin flat with the reverse light pin so a trailer with brakes knows to unlock the brakes because you're backing up? So many more trailers have gone to 5 pin flats, but the 7 to whatever adapter companies have been slow to figure this out. I had to make one myself. I think they are a little more widely available now. But still a very cool feature, I saw that while wiring in the White Knight reverse lights.