How To Wire the Reverse Light Wire for a Trailer on a 2017 Ford Expedition
Updated 04/09/2019 | Published 04/08/2019
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Question:
I just purchased a 17 Ford Expedition. It came with a factory 4 way connector. I had my rv dealer install a 7 way, but they didnt wire up reverse lights to the aux pin like I requested. Am I ok splicing in to the backup light in one of the trail lights, or is there a better place to tap into the reverse lights?
asked by: Rik C
Helpful Expert Reply:
Yes, you can splice into the reverse light signal behind your tail light housing and then run this to the 7-way trailer connector. This is how the reverse light circuit will be obtained on any vehicle without tow package wiring for a 7-way. According to my research, the reverse light circuit on your Expedition is carried through the green/brown wire but I recommend you check this with a circuit tester. In order to splice into the reverse light wire, I recommend using part # SWC501746-1. You can then run a wire part # 16-1-1 to the back of the 7-way, see photo.
Conner L.
4/9/2019
Yes, you can splice into the reverse light signal behind your tail light housing and then run this to the 7-way trailer connector. This is how the reverse light circuit will be obtained on any vehicle without tow package wiring for a 7-way. According to my research, the reverse light circuit on your Expedition is carried through the green/brown wire but I recommend you check this with a circuit tester. In order to splice into the reverse light wire, I recommend using part # SWC501746-1. You can then run a wire part # 16-1-1 to the back of the 7-way, see photo.