Trailer brake controller

[ericmeyers13]

I have an 06 Denali XL. I was wanting to tow a trailer and car this weekend. I'm borrowing a trailer with trailer brakes and I'm wanting to hook up a brake controller for it. Is there a harness or plug built in for me to plug into? If so, where is it located? If not, how would I hook that up? Thank you

 

[BirchyBoy]

Does your truck have a 7 pin jack by the hitch? If so, it may be pre-wired. Look for a harness around the drivers firewall, inside. If memory serves, it would be a female 4 pin flat connector.

 

[Bill-H]

Hmmm, I have an '03 Yukon with the 7pin in the back, Would I have this connector as well?

 

[big_b_in_PA]

Here is a video on you tube on installing one in an 05 Sierra.

http://www.etrailer.com/tv-install-brake-controller-2005-gmc-sierra-hm47297.aspx