2007 3500 Hd Trailer Charging Fuse

[dr187pc]

I have a 2007 3500 HD Crew Cab Dually. I can not get 12 volts out of the trailer wiring for the so called trailer battery charge???

 

Any thoughts?

[sonjaab]

In your underhood fuse center you need to put a 40 amp fuse in

Stud #1. pg. 625 in owners manual

[2017HD]

You will also need to fuse the Trailer Brakes -unless you ordered the built in brake controller - then they finish the wiring.

[txdutt]

depends on which style 07 you have.

 

If it's the classic, pull the red blank out of stud #1 & replace with a 40amp fuse & you'll be good to go..

 

if you have the NBS, you have to connect the wire that's under your brake master cylinder (look & you'll see it with a round connector), hook it to the smaller of the studs on the front part of your power center with an M6 nut and then put in the 40amp fuse into space #70 on the fuse block.

[p3ofpcb]

depends on which style 07 you have.

 

If it's the classic, pull the red blank out of stud #1 & replace with a 40amp fuse & you'll be good to go..

 

if you have the NBS, you have to connect the wire that's under your brake master cylinder (look & you'll see it with a round connector), hook it to the smaller of the studs on the front part of your power center with an M6 nut and then put in the 40amp fuse into space #70 on the fuse block.

 

Will this work with the dual battery option? The brake controller harness says not to use the fuse, but I have no power to the 12volt feed to the 7 pin connector.