LS1 PCM fuel pump output question
04-20-2013, 08:26 AM
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LS1 PCM fuel pump output question I am helping a friend with a thirdgen Camaro LS1 swap, and I am in the process of going through the wiring harness. My question is does the LS1 PCM supply ground or 12 volts to the fuel pump relay? I looked up a schematic and it looks like it supplies 12 volts to the relay and the other side of the relay coil goes to ground. If so I have it wired up backwards. Kind of weird because the fan relays are opposite.
