Electric fuel pump wiring

Fuse each circuit. Also there may be a time where you want fuel pressure without ignition like priming a carb, setting fuel height or to kill fuel pump with ignition on to drain the carb prior to storage or transport. plus it gives the driver 2 more aircraft switches to throw prior to starting...fuel, ignition, start! (could also pump, start, THEN ignition to prime oil pressure prior to starting).