Fuel Pump Relay

I have a 90 plymouth voyager(2.5 ,4 cylinder)and I'm having problems with it cranking.It stalled on me 3 different times in 4 days before it finally died on me.The motor will turn over but I have no gas or fire.I've checked to see if the fuel pump cut on when the key was turned but I didn't hear anything,so I check the wiring to the fuel pump itself.I don't have any power to the pump.So now I have a new fuel pump relay I wanna try but I can't find where the old one is located.Any help would be great.Thanks