The factory harness has separate ignition switch wires for crank and run. On my FI install I simply spliced these together in the engine compartment to trigger the computer. It is a big splice because the ignition box and fuel pump relay need the same signal.
I'd seriously advise only using this splice to control a relay that supplies the 12V to the FiTech unit.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
