Brief Description: Fuel boost pump back up circuit.
When I first wired my boost pump to my main bus (VP-50) I forgot about my plan to utilize a back up switch I put on the right hand console. In the unlikely event my VP-50 should fail, the guarded toggle switch forward of my master switch can be used to select the auxiliary power bus to energize the boost pump. This way I can at least prime and therefore start my engine. The aux bus also powers critical items like the flap motor, GPS and my engine monitor (EMS) and my primary flight display (EFIS) has an internal back up battery).
