If the pump won't turn on it's likely the relay or the pump.... There is a panel you can unscrew near the fuse panel with the relays (They are round shaped)... I forget the order they are n there. Try switching the one for the fuel pump with the one for the headlights (assuming they work) in order to see if it's just a bad relay...
Sorry can't say I've been able to work on mine in awhile and I forget where everything is.... I'd recommend you ask your question over at 914world.com or 914club.com.... Or both. You'll have a much better answer likely within an hour.