Another Electric Fuel pump wiring question.

Also note that unless your car is EFI that oil pressure switch is pointless.
A carbed motor will continue to run if it looses oil pressure until the carb is empty of fuel.
You will also need a manual bypass switch for the oil pressure switch so the fuel pump can run before the car starts and gets oil pressure.

In my opinion the oil pressure switch in the fuel pump circuit is a PIA.