Wiring priming fuel pump

I used a Holley mech diaphragm pump on my 440 Charger for years. It had an electric pump back at the tank that I only ran to prime the system before starting or when at the track racing. The electric was a Holley Red pump as I recall. It was never an issue with both pumps on the car. On the street, the electric pump was not turned on and never had any issues. At the track, the combo stayed no lower than 5-1/2 psi thru the lights.