Electric Fuel Pump Shuts Motor Off

Stuck float?

It doesn't act like a stuck float in the carb. I drove the car for 30 minutes before shutting it off. On the second restart is when the trouble started. Its weird- I can start the motor and it will run until I turn on the electric pump. As soon as the pump comes on the engine will die like someone cut off the switch.

Its an old holley blue pump thats been on the car for a few years. Was wondering if the fuel pump motor is shorting out or something and causing some type of interference with the ignition.