Hello,
I know this has been posted many times.
I am looking to upgrade my 2017 expedition to the HD towing package.
I understand I need a 7 pin plug.
A tranny oil cooler
And the trailer brake controller.
My question is, since I haven't been able to find anything super clear, has anyone done a real nice write up on how to do all of this with part numbers?
Also, while looking at the current wiring harness I found what appears to be wiring for the 7 pin harness in an of shoot from the 4 pin, plugged into a dummy plug. Does anyone know what this is?
I know this has been posted many times.
I am looking to upgrade my 2017 expedition to the HD towing package.
I understand I need a 7 pin plug.
A tranny oil cooler
And the trailer brake controller.
My question is, since I haven't been able to find anything super clear, has anyone done a real nice write up on how to do all of this with part numbers?
Also, while looking at the current wiring harness I found what appears to be wiring for the 7 pin harness in an of shoot from the 4 pin, plugged into a dummy plug. Does anyone know what this is?