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Message: <blockquote data-quote="gagvanman" data-source="post: 648415" data-attributes="member: 17411">This how I did this:[ATTACH=full]10387[/ATTACH]Relay 1 gets +12v on pin 86 from the starter / ignition when the key is turned to start. This energises the relay and routes +12v from the battery to relay 1 pin 87 which primes the fuel pump.Once the engine has started and the ignition key returns to the acc position, relay 1 disconnects pin 87 and relay 2 gets +12v from the alternator ignition warning connection to energise relay 2 which routes +12v from the battery via pin 87 to the pump.If the engine stops with the ignition switch still on, the alternator ignition warning supply to relay 2 pin 86 is dropped and the pump stops.</blockquote>