Ok, im in need of replacing my FP relay. all my local auto parts stores would have to order it. Thats about 2 days. i need this thing on the road by saturday. IIRC the relay is a 30a relay. Could i use a 30A automotive relay from radio shack? wire a fues power supply in, a wire off the pressure switch, a ground, and a power wire to the pump? (i think those are the things that would need hooking up).

Would this work?

 

It is highly unlikely that would work, you could wind up causing even more problems. Go search through some junkyards or try your local GM dealerships.