Electric Fuel Pump Shuts Motor Off

electric pumps often times have an ignition cutoff switch.

it's a safety feature so that if you are in an accident, and the engine cuts off, the fuel pump does not keep pumping.

basically it's an oil pressure dummy switch. it's wired so that when your key is in start position (cranking starter) the pump is always on. when it's the key is in run position the pump is on unless oil pressure dies, then it cuts out.