fuel pump wiring
 

hey yall, im new to this site and i have a few questions about some stuff....if i suck with posting bear with me!

i have an 85 k10 that iv been putting back together in my spare time. i had a wiring harness for an 87 laying around and im swapping to tbi. the wiring harness is for a dual tank truck, and i am wanting to use a blazer tank. i already have the tank on the frame, but i just need help figuring out all the wiring so....im hoping somebody out there has or knows where to find a good wiring diagram for an 87, at least for the fuel tanks and selector switch.

i would greatly appreciate it!