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

Updated 08/28/2017 | Published 08/26/2017

Products Featured in This Question

Zinc Plated Hex Flange Nut - M6

(52)

$2.70

Zinc Plated Hex Flange Nut - M8

(68)

$1.88

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

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