How the FUEL SYSTEM electrical goodies connect?

This truck has 69000 actual miles. I was driven mostly in the

beginning of it's life, then sat in the yard for a long time.

My friend inherited it and he replaced both gas tanks and

fuel pumps. Both tanks were really rusty and nasty inside.

I know for sure, the front fuel pump works. I do not know

whether he got the rear one to work. He also let this truck

sit for over a year or more.

He recently died, I bought the truck from his widow for

$1000. The rear bumper has a mild twist on the driver's

side, there is a small dimple on the front of the bed, just

behind the passenger door. Other than that, it almost

looks new, inside and out. I drove it 12 miles to my house

on the front tank.

I would like to know how the FUEL SYSTEM electrical

goodies connect along the way and to the tanks, switches,

fuses etc. (Diagrams) So I might rule out anything, before

I drop the rear tank and replace the pump.

I would also like diagrams of the fuel lines/ hoses/ filter

locations. Pretty much the whole fuel system!

Diagrams and Pictures

He replaced the injectors when he replaced the tanks

Thank you for your help!

CJ MEDEVAC