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I have a 2005 f-350 with the factory Upfitter switches. I am not getting any power to the wires under the hood? When I flick the switches in the cab to the ON position the little light on the switch turns on while the truck is running! I have checked the fueses and they are all good the relay is there! am i missing somthing?

Any help would be great!!!

Thankx
 

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Those are not the wires that come from the upfitter switches!

The upfitter switch wires are directly behind the interior fusebox. The wires under the hood are called "pass-through" wires because they are just extra wires that go through the firewall that you can use for whatever you want. The other end of the pass-through wires are also just behind the fusebox.

You can connect your upfitter wires to the pass-through wires and that will let you hook up to them under the hood.
 

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there is wires that come off the back of the interior fuse panel that connect to your switches. those connect to whatever you want them to
 
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