Electric Trailer Brakes ???

[BLKH2FLA]

I think I got it figured out!
I found info that says a vehicle without the TP2 auxillary battery needs a
40 A fuse in the ( stud#1 ) location in the under hood fuse box.
( note: this fuse is not needed if you have 2 batteries )

I will check on trailer today and let you know.
Thank you for your time and your help in troubleshooting my problem.

Craig

[PARAGON]

Originally Posted by BLKH2FLA

I think I got it figured out!
I found info that says a vehicle without the TP2 auxillary battery needs a
40 A fuse in the ( stud#1 ) location in the under hood fuse box.
( note: this fuse is not needed if you have 2 batteries )

I will check on trailer today and let you know.
Thank you for your time and your help in troubleshooting my problem.

Craig

Craig,

I hope it's that simple. But I'm not sure that it is. That would be the power supply to the brakes. If you are getting braking upon moving the slider, then you have power. Stud 1 doesn't have anything to do with receiving voltage from the vehicle's brakes.

I think someone else just last week or so had a similar problem but they were not getting any response back out to the brakes and it was because there was no fuse at stud 1.

[BLKH2FLA]

Paragon,

Right you are. There is NO difference with the fuse added.
The controller has a light that lights when I use manually but does not light
when I push on brake pedel???

Craig

[tomp]

Just thought I'd mention tha tthe Trailering Brake Harness that Hummer sells will not work on '06 and later models unless you change the wiring on them. Don't know if they started making these for the later models yet. I showed the problem to my dealer and they were unaware of the issue.

[PARAGON]

Then it is the feed from the vehicle's brakes that is missing.

[BLKH2FLA]

Tomp,

Well I have an 06 so that might be the problem!

What did you have to do to make the fix ?

Thanks
Craig

[PARAGON]

Wow, just stupid. They had the same problem with our '03s, which is part of the reason why mine is wired up differently.

You need to figure out which wire coming out of the Brake controller is the wire for the Brake feed. That wire needs to match with, IIRC, a light blue wire.

[BLKH2FLA]

PARAGON,

Well crap !

I'll see if I can determin which wire.

To be continued