I'm having an issue getting power to my 7 way connector on my 2003 7.3 PSD 4x4 Lariat truck. All fuses are good, checked for continuity, ground is good, have 12 volt constant on the plug just no turn/brake, running lights. I've looked everywhere for the Aux box 4 and can't seem to locate it to check the left/right trailer relays. It should be under the hood by the 4x4 relays between the air cleaner and firewall, but it's not there. The truck has to have one because the AC is working and Aux 4 contains the AC clutch relay. There are no empty plugs to indicate it is missing, it's almost like it was never there. Any ideas where I might find it or how to get the trailer wiring to work? I'm so lost at this point I don't know weather to scratch my watch or wind my butt! Any help would be greatly appreciated!

John

 

If your still looking the distribution box is right in front of the steering wheel on the firewall under the hood. The other fuse block is under the steering wheel behind the cover like all super duties

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