fuel pump fuse

So yesterday I was driving in my 2000 wrangler and while sitting at a stop light the rpm started fluctuating and eventually the car shut off. The car has always had problems starting first crank but always starts on the second crank. Also when Im accelerating sometime the rpm drop and come back...

How many amps does the fuel pump connectors have to be able to handle? I need to know so I can buy aftermarket 4 wire connectors to replace for the sending unit and fuel pump connection

My 2004 rubicon keeps blowing fuel pump fuse any ideas