Troubleshooting No Power at Factory Brake Controller Port on 2008 Ford F-150

Question

Question:

I changed break controller out now I have no power to my factory plug on my trailer breaks under my dash where hook up wiring harness to plug in break controller so have no power to break controller now?

asked by: Jeff

0

Expert Reply:

If you aren't getting any power to the factory brake controller port beneath the dash of your Ford F-150 then most likely you have a blown fuse under the hood.

I took a look at the online version of the owner's manual for your 2008 Ford F-150 and it lists the trailer brake controller fuse in the F105 position inside the power distribution box. This is a 30 amp cartridge fuse. Replacing this particular fuse should get power back to the brake controller port and resolve your issue.

expert reply by: Chris R

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Answer 1

On your brake controller the red wire is the stoplight switch circuit of the brake controller and it would wire to the green wire of your harness that is labeled stop lamp. The black wire of the brake controller is the 12 volt power source and would…

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Answer 2

To install a brake controller in your 2008 Ford F-150 you would be able to use the brake controller port under the dash and you will need to complete the wiring at the rear of your vehicle to the 7-way at the rear of the truck. For a brake controller…

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Answer 3

If your Valley Journey Brake Controller #52650 delivers a constant brake output signal to your trailer connector you can use a circuit tester such as #PTW2993 to determine if the fault is in the controller itself or elsewhere. There are several…

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Answer 4

I assume you are referring to a breakaway battery but this was not specified so please just clarify this for me if that is not the case. That said, I don't really have any accurate charge times for your breakaway battery as there are just too…

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Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 9

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 10

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 11

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 12

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Troubleshooting No Power at Factory Brake Controller Port on 2008 Ford F-150

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