Difficulty

Easy

Steps

6

Time Required

                          20 - 30 minutes

Sections

1

  • How to Activate 12 V Aux Power in a 2007-2014 Chevrolet Suburban
  • 6 steps

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Introduction

What you need

Step 1

              How to Activate 12 V Aux Power in a 2007-2014 Chevrolet Suburban
  • Locate the wiring harness bundle, which exits the firewall underneath the brake booster.

Locate the wiring harness bundle, which exits the firewall underneath the brake booster.

1024

Step 2

  • Identify the auxiliary wire, which is folded and taped to either the wiring harness or the fire wall.

Identify the auxiliary wire, which is folded and taped to either the wiring harness or the fire wall.

Step 3

  • Use a knife to cut the tape away from the wire and unravel it.

Use a knife to cut the tape away from the wire and unravel it.

Step 4

  • Run the wire against the battery box.

Run the wire against the battery box.

Step 5

  • Place the ring terminal (washer end) of the wire on the right post located at the front of the battery.
  • Place the 10 mm washer on the post.
  • Tighten the washer using a 10 mm wrench, crescent wrench, or pliers.
  • Post size and location may vary slightly in different models. The washer will fit snuggly around the correct post.

Place the ring terminal (washer end) of the wire on the right post located at the front of the battery.

Place the 10 mm washer on the post.

Tighten the washer using a 10 mm wrench, crescent wrench, or pliers.

Post size and location may vary slightly in different models. The washer will fit snuggly around the correct post.

Step 6

  • After hooking up the wire, check to make sure the 40 amp fuse is installed for the auxiliary pin.
  • If the fuse is not installed, there will be an empty space. This fuse can be purchased at any automotive shop.

After hooking up the wire, check to make sure the 40 amp fuse is installed for the auxiliary pin.

If the fuse is not installed, there will be an empty space. This fuse can be purchased at any automotive shop.

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Author

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                    Lauryn Johnson

Member since: 01/19/2016

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                       Oakland University, Team 6-14, Walwema Winter 2016                        

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                                            1 Guide authored

Eric Wonderlich Jr. - May 10, 2017

Reply

This sends constant power to the trailer. What if I wanted to make that power switched by the ignition so when the key is off I can be confident that the trailer won’t kill my truck battery? I know I can just unplug the trailer harness or pull this fuse to stop it, but That might be easy to forget to do.

Bobby Burke - Mar 8, 2020

Eric, did you ever get an answer to your inquiry about killing the power to the trailer when the key is in the off position?

Albert - Nov 14, 2017

Reply

It’s not a break booster, it is a brake booster. If you are going to be an author, you should know the meaning of the words you use.

Garry Foster - Aug 14, 2018

Never fails some troll somewhere..

nshourds - Dec 27, 2021

“Words have meaning” geez Cyber Warrior. Tough talk from a distance. ?