4 prong to 7 prong

[adamsdaddy]

In my 2016 owners manual under fuse specification chart I believe it is the #48 40 amp fuse. If it doesn't have a fuse then you'll need to get one and just remember to get the low profile fuses. Remarkably easy to run a line back to the trailer hitch.

 

[bjpinub]

So, I installed a 7-ping connector on my 2017 Expedition which only had the towing prep package. I am still confused about the best way to connect the 12v wire in the 7-pin harness to a 12v power source. I have seen some going to the battery, and I have seen some going to an orange wire. What is my best option? And, what are all the supplies I need?

 

[07navi]

So, I installed a 7-ping connector on my 2017 Expedition which only had the towing prep package. I am still confused about the best way to connect the 12v wire in the 7-pin harness to a 12v power source. I have seen some going to the battery, and I have seen some going to an orange wire. What is my best option? And, what are all the supplies I need?

They are all 12v, there is a diagram on google to wire the plug.

 

[Langer]

So, I installed a 7-ping connector on my 2017 Expedition which only had the towing prep package. I am still confused about the best way to connect the 12v wire in the 7-pin harness to a 12v power source. I have seen some going to the battery, and I have seen some going to an orange wire. What is my best option? And, what are all the supplies I need?

I tapped the orange wire. It’s what the factor HD tow plug would have used if it didn’t terminate there in the non-he tow vehicles.

 

[HavasuMike]

Does anyone know if this is true? I found it on etrailer.com. They say that there is an orange wire near the back of the vehicle. Here is the link
https://www.etrailer.com/question-310616.html

 

[vincentrose]

This is the wiring diagram for my 2014 with the HD tow package, it looks like the orange wire, runs all the way from the fuse box

 

[Langer]

Does anyone know if this is true? I found it on etrailer.com. They say that there is an orange wire near the back of the vehicle. Here is the link
https://www.etrailer.com/question-310616.html

On my 2017 I tapped the very thick orange wire above the driver’s side wheel shroud in the engine compartment. From the threads I’ve read here, if you do not have HD tow (no 7-prong plug standard), I thought it terminated there. If that is indeed the same very thick orange wire highlighted in the picture there, it should work. I’ll grab a picture in the morning.