7 Pin Trailer Harness Power Cable

[Doug W]

I have a 2003 Suburban and can not get power from the 12V red power cable at the 7 pin trailer harness. I have power to all the turn signals, brakes, back up, etc - but no power at the 12v red accessory pin.

I checked the fuse panel - but can not find a listing for the trailer harness power feed. Does anyone know where to locate the fuse?

 

thanks,

 

Doug

[peirek]

Hi Doug,

My 2010 requires a separate fuse that did not come from the factory equipped. Don't know if the 2003 is the same but likely. Check the owners manual.

 

Paul

 

I have a 2003 Suburban and can not get power from the 12V red power cable at the 7 pin trailer harness. I have power to all the turn signals, brakes, back up, etc - but no power at the 12v red accessory pin.

I checked the fuse panel - but can not find a listing for the trailer harness power feed. Does anyone know where to locate the fuse?

 

thanks,

 

Doug

[[email protected]]

You need to get a maxi fuse and stick it in "stud 1" in the underhood fuse box. A 30 -40 amp should be good.

[pwall]

Check the fuse block under the hood on the driver's side. Stud #1 is for the power feed for the trailer, Stud #2 is for the power to the trailer brakes. At least that's how it was in my '02 YukonXL, I wouldn't expect your '03 to be different.

 

Btw, welcome!