I've recently installed a Sniper QuadraJet and HyperSpark on my '86 Buick Regal. It's a bone stock 307 Oldsmobile engine. Two days ago I did the first startup and it was good, first drive was nice and easy but ran a little warm, but that's for another post. Fast forward to this morning, I went to move the car and when I shut it off and took the key out it just stayed running, and running good at that. But I pulled the fuel relay and let it die. I've done some research and I believe it would be backfeed. My Sniper, distributor and HyperSpark box triggers are sharing the same relay ran off the OEM distributor (+12V, 12 AWG, pink wire). I'm going to put the Sniper on its own relay, and the distributor & HyperSpark box together on their own relay from what I've found on Holley that is most likely the issue. With all that being said, would it be OK to share the switched +12V between the two relays?