zzRaVeNzz Posted September 19, 2010 Share Posted September 19, 2010 Hey guys I have a 1982 280zxt just installed megasquirt and I need to know how to wire up the purple wire from the painless harness from diyautotune.com. I know i need to wire it up to the fuel pump relay but not sure which wires, i'm using ms2 extra 2.1 by the way. thanks Quote Link to comment Share on other sites More sharing options...
JSK Posted October 23, 2010 Share Posted October 23, 2010 I'm built my own relay board. The fuel pump wire off the ecu connects to the ground contact on the relay. The ecu engages the switch and grounds it if the system is getting rpm or not. You should have received a wiring diagram with diyautune package. Quote Link to comment Share on other sites More sharing options...
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