[wilkin250r]

I want to say (but I'm not 100% certain) that the electrical connections for fuel sending units and the solenoid are on their own connector through the firewall, but near the fuse block and other connectors on the driver's side.. The wires then get routed up and across the firewall, and routed down the passenger side frame rail.

I have the same setup, I worked on it a few years back, dropping the passenger tank and replacing the sending unit, so I think I'm correct, but I'm not positive. I remember the basic circuit, but not the fine details.

I could get you pictures from my truck, but it would probably take a couple days...