GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 2 of 2
  1. #1

    Default Accessory power posts in fuse box

    I'm posting this information so hopefully it will pop up if someone searches.

    I'm installing a trailer brake controller in my '99 suburban. I'm using the A and B posts in the underhood fusebox. Mine did not have nuts attached so... after several trips to the hardware and auto stores the nut size needed is:

    M8 1.25

    This may be common knowledge, but I didn't know and hopefully I can save somebody a few trips to the store.

  2. #2


    Thanks for that info and welcome to the club.

Similar Threads

  1. Switched accessory power for '11 Silverado
    By hamel01 in forum GM Electrical Tech
    Replies: 12
    Last: 12-16-2010, 04:51 PM
  2. 2002 Suburban Accessory Power
    By suburban_atlanta in forum GM Electrical Tech
    Replies: 1
    Last: 03-31-2010, 09:52 PM
  3. turning off accessory power outlets when truck is not running
    By etpn13 in forum Audio, Video & Gadget Tech
    Replies: 7
    Last: 05-24-2009, 06:04 PM
  4. How to provide more accessory electrical power?
    By rfdillon in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 5
    Last: 12-06-2007, 10:57 AM
  5. Dead Accessory Power Outlets, Help
    By petest50 in forum Chevy Trailblazer Forum (GMC Envoy)
    Replies: 4
    Last: 03-01-2007, 01:22 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts