so my buddy took the battery out of my other buddies truck while he was in pcb and used it for his trolling motor and when it came to put it back in he put the battery in backwards......(positive to the negative, neg. to the pos.) hooked up and everything. lol glad i wasnt here when my buddy got home!

now with it hooked up correctly it cranks over and sparks but the fuel pump isnt coming on. All the fuses look to be in good condition, its a 90 4x4 ext cab. 4cyl. 5spd. Ive searched but not much luck. Does anybody have any input on what to do to locate or fix this problem?