OK, I see the point of the relay so now I am trying to understand where the oil pressure switch would wire into a relay setup. Would you happen to have a diagram? I'll assume the relay would physically be near the oil pressure switch somewhere on the firewall and not near the fuel pump. After looking into the relay more it looks like a relay kit from Ron Francis would simplify this quite a bit. I'm still not finding much on where in the circuit the dash toggle switch would go.