Trailer Tow Package Does Contain 4 Wires for Aftermarket Brake Controller Install

[Geoff]

I looked all over by the steering wheel, and under the glovebox. I don't see anything but the taped up wires. I'm guessing the other end of the plug is not included until the dealer installs the controller, or never and they just butt splice the brake controller into the spare wires.

Does anybody have the brake controller wiring diagram yet?

Butt splices are so easy I see this as a non issue but it would be nice if Ford would identify the wires.

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[heathconder]

so i looked and there is a wire for brakes on the 7 pin i have followed it up to the engine bay then i loose it. looking at the owners manual it has fuses for trailer brakes and a trailer module. not sure where any of this is still trying to find that.

 

[FX4Offroad]

so i looked and there is a wire for brakes on the 7 pin i have followed it up to the engine bay then i loose it. looking at the owners manual it has fuses for trailer brakes and a trailer module. not sure where any of this is still trying to find that.

Thanks for looking!

 

[heathconder]

Butt splices are so easy I see this as a non issue but it would be nice if Ford would identify the wires.

have you verified what those wires are for?

 

[Geoff]

have you verified what those wires are for?

No, I don't have my truck yet and I have not ordered the wiring diagrams. It sure wouldn't have been hard for Ford to properly identified those wires tho.

 

[Geoff]

so i looked and there is a wire for brakes on the 7 pin i have followed it up to the engine bay then i loose it. looking at the owners manual it has fuses for trailer brakes and a trailer module. not sure where any of this is still trying to find that.

If you can see the color of the wire and any stripe color(s) it should match the pigtail end (if it's the correct wire).

For definitive proof, use a multimeter first to measure the voltage at each end of the brake wire. Both ends should be 0V. If so, then put the meter in Ohms mode and then connect one meter lead to the pigtail end and the other lead to chassis. The go back to the 7 pin connector and temporarily ground the brake pin. If it's the same wire the meter should change from infinity to close to 0 ohms.

 

[heathconder]

so the black and green got the back trailer brake pin. the yellow is 12v power and the white is ground. just checked with meter. just have to find a brake triger off the switch and be ready to go.

 

[rangerdanger]

so the black and green got the back trailer brake pin. the yellow is 12v power and the white is ground. just checked with meter. just have to find a brake triger off the switch and be ready to go.

Can you attach photos when you’re are done with captions? Thank you.

 

[heathconder]

just need to order a controler ill let you know how it goes.

 

[heathconder]

#1 jumped brake to ground at the plug
#2 wires under dash
#3 checking for ground on the black/green wire
#4 show 12v at yellow/black wire (excuse the spelling)
#5 show ground at white wire

 

[rangerdanger]

#1 jumped brake to ground at the plug
#2 wires under dash
#3 checking for ground on the black/green wire
#4 show 12v at yellow/black wire (excuse the spelling)
#5 show ground at white wire

Is the black/green wire 2 different ones bundled together?

 

[t4thfavor]

I forget the wiring for my P3, but I sort of recall it being 4 wires. Do two of them hook to the black one?

 

[rangerdanger]

I forget the wiring for my P3, but I sort of recall it being 4 wires. Do two of them hook to the black one?

That’s what I’m thinking, 3 wires is 1 too few.

 

[heathconder]

no it is missing the brake trigger you will have to tap into for that. so its black with green strip goes to the trailer yellow with red strip 12v power and white is ground.

 

[Geoff]

no it is missing the brake trigger you will have to tap into for that. so its black with green strip goes to the trailer yellow with red strip 12v power and white is ground.

Yeah, I was going to say it needs a brake signal to complete the 4 wire setup.

Again Ford, why haven't you identified these or documented what needs to be done ????

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