help with fuse #

[Elk]

I have an 03 3500 truck with factory tow package. I need to know the fuse numer for the hot wire to the 7 pin plug (the one in the 1:00 postion) on 04 and up it is number 19 but not on the 03. dealer said check every fuse. but someone must know the answer. Thanks

 

[artie]

Looks like it is fuse #1 which is a 40AMP. This also feeds power to the electronic brake connector under the dash.

 

[Elk]

Thats not good to here as the brake controler still works. I guess it is not a simple fuse replacement

 

[artie]

The shop manual shows two connectors a 14 pin connector on driverside underside near frame and a 10 pin connector at the back near the hitch that this feeds thru.

 

[Elk]

So you are thinking I should pull apart those connectors and see if I have power to them? THanks

 

[artie]

I would start at the back and work toward the front to check for the problem. The power is on pin 4, white/red wire on 10 pin connector. The power is on pin 3, red/orange coming in to the 14 pin connector and pin 3, white/red on mating connector to the back of the truck.

 

[GerryDrake]

check the fuses ... easy way

With the great number of fuses, sometimes there are several inline for the same thing and it CAN indeed be a hassle to find a blown fuse.



What I do is take a multimeter, set to check continuity, and just stick one probe down on each of the two exposed sides of the fuse that you see right on top. A needle swing is easier to see than a digital in this check unless you have a digital one that will beep when you have continuity. Takes about 3 minutes to check all of them.