Which Fuse Provides 12-Volts to 7-Way Connector on 2009 Chevy Silverado 3500 Diesel
Updated 02/29/2020 | Published 03/10/2015 >
Question:
Which fuse control the 12v power on the 7 way plug on a 2009 3500hd Chevy diesel
asked by: Tony
Helpful Expert Reply:
If the 12-volt pin on your trailer connector isn't working, you've got a missing or blown fuse or the wiring connection at the fuse box under the hood wasn't finalized.
You're looking for a 40 amp fuse, located in position # 68 in the fuse box under the hood. The fuse protects one of the nearby power studs on the side of the fuse box, which is where the wire that provides power to the 7-way should be connected. If it's not, you can find the wire bundled up under the master cylinder (see photo). Simply uncoil the wire and attach it to the right hand stud on the fuse box.

Product Page this Question was Asked From
Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- 7 Blade
- Plug Only
- Pollak
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Jim W.
2/28/2020
I have a 2008 gmc 2500hd diesel..my 7 way charge wire is dead..the wires under hood on the front of the fuse box are hot..all other circuits are working..will I have to run a new wire?