What Size Nuts Are Needed to Connect Wires Under Hood for Brake Controller Installation on GMC Yukon

Question

Question:

What size nuts do I need for wiring my 2007 Yukon brake controller? 2 different sized ones for the fusebox connection?

asked by: Joseph H

0

Expert Reply:

As it seems you already know, when installing a trailer brake controller on your 2007 GMC Yukon you will need to locate the two wires under the hood that need to be connected to fully activate the vehicle's tow package. One is the power wire to the brake control and the other is the battery charge line to the 7-Way connector. You will need to attach both of the wires to the threaded studs under the Gray handle at the front of the fuse box.

To do this you will need one M6 x 1.0 nut like # 185916 and one M8 x 1.25 nut like # 185917. I have also attached a detailed article on this installation process for you to check out.

expert reply by: Chris R

0

Answer 1

The P3 brake controller, #90195, will go into a sort of sleep mode after it detects no movement for 15 minutes. While it is on it does not draw very much power. What you can do to make sure it goes to sleep is exit the truck after turning it off,…

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Answer 2

GM does not supply the attaching nuts required to secure the wires to the studs. These can be obtained locally. You will need (1) M6 x 1.0 nut, #185916 and (1) M8 x 1.25 nut, #185917. I have attached an FAQ for you that may also help.

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Answer 3

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a…

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Answer 4

The colors that GM typically uses for their factory trailer wiring are as follows - Dark Green - Right Turn/Brake Lights Yellow - Left Turn/Brake Lights Brown - Tail Lights White - Ground Light Green - Backup Lights Blue - Electric Brakes Red/Black…

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Answer 5

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 6

It sounds like you're going to need the Air Lift Universal Air Spring Spacers for LoadLifter 5000 and 7500XL - 4" Lift - Qty 2 #AL52440, which is the 4" lift spacer.

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Answer 7

If the lift you installed added height to the suspension between the frame and the axle you would need a 2 inch spacer when installing the part #AL57204 with the part #AL52420 which will take up the extra space created. Since you asked where it…

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Answer 8

First, I have included a link to the installation instructions to the right for Air Lift kit #AL88299 for you. Using soapy water is the best way to find a leak in an air system. If it is leaking at a hose or fitting then replacing that hose or…

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Answer 9

The 2014 Chevy Suburban does not have a place to plug in a brake controller but it does have a tow package wire bundle that you will use to wire up a brake controller. The wire bundle is located up under the dash to the left of the steering column.…

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Answer 10

The #38656 Junction Box won't take the place of a trailer mounted battery, but it provides a protected and organized method of connecting the wires from the trailer connector pigtail to all the various lighting, power and brake circuits on the…

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Answer 11

For a trailer breakaway battery and charger you can use the Hopkins Engager Push-To-Test Trailer Breakaway Kit with Built-In Battery Charger #20400. This kit has a built in charger to charge the battery while connected to the tow vehicle and has an…

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Answer 12

There are two threaded studs on the front of the power distribution box (closest to the front bumper) that will need to have the 12-V feed to the trailer connector and the power feed to the brake controller connected if they aren't already. As…

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What Size Nuts Are Needed to Connect Wires Under Hood for Brake Controller Installation on GMC Yukon

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