If you search the forum for "Fuel Pump Relay" you'll find many usefull threads about this same issue, including this one.
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I found a Chilton on ebay for about $10 that is a good basic repair guide which includes all the wiring diagrams. Try rolling all your fuses to clean any corrosion or replace them with newer copper style. I believe fuse 4 powers the fuel pump relay. I'll have to check for certain when i get home from work.