LT1 Conversion will not shut off

[Badley]

I switched it to the ignition slot on the fuse box. Same thing. I talked to Street and performance and they thought i was getting a backfeed from my fan relays... I unhooked them... Same thing... I unhooked my alternator...same thing... so the only thing left getting power was the fuel pump relay.... i unhooked it and ran it to the ignition slot on the fuse box along with the previouse wire and wah lah it started and turned off. My only question now is what is suppling my computer full time power. According to the tag on the fuel pump wire it says "to battery" and has a fuseable link. That wire also pigtails off to the ECU and I thought it was its constant source of power.