I have heard that the fuel solenoid is a one wire hook up. Mine has three; white, red, and black. I assume red - 12V, black - GND, White - signal to??.
The 2 lives need to be put through relays. if you look at the writing on the wires it should actually say EARTH, PULL and HOLD. Earth is obvious PULL is connected via a relay to the starter solenoid HOLD is via a ignition switched live.
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