Fuel pump wiring

my battery is in the trunk, and up until last race meeting didnt need a electric fuel pump, but now i have one in, and new fuel lines.

my issue was that i run a battery isolator switch on the rear, and it also has a live feed cut off for my MSD thats separate to all the other wires due to the MSD not liking any interrupted feed or spikes.
so managed to get around that issue by having a complete isolated live feed and switching/ cut off system via a relay (similar to crackedbacks pump wiring)