Fuel Pump Relay(stock)

[FubarI33t]

Where do i tap into the wiring for the stock fuel pump relay. Only thing stopping me from starting the car is the purple fuel pump wire from MSII. I need to know where to run it to on a 83 280ZX N/A

[FubarI33t]

I found the wire that activates the Fuel pump relay, it's a blue with red strip wire next to the battery, Connecting that wire to the battery turns the fuel pump on, but connecting that wire to the purple fuel pump wire to the MSII does nothing. what am i missing?

[zzRaVeNzz]

have you ever figured out that fuel pump wiring issue you had? I'm currently in the same situation as you. I'm running the fuel pump from the stock eccs but i want megasquirt to control everything. This is what i've found so far from searching but don't fully understand what it's saying about the blue w/red hooked to EFI relay power out +12v.

 

To get the fuel pump and relay setup for MS:

 

Stock fuel pump relay information:

 

white w/black stripe is +12v (power in from EFI relay)

green is power out (to fuel pump and air regulator)

black is ground for the relay trigger (through neutral switch to ground)

blue w/red stripe is +12v for relay trigger (to ECCS)

 

Changes necessary for megasquirt:

 

blue w/red hooked to EFI relay power out +12v

black hooked to MegaSquirt pin #37

 

fuel pump ground (black) goes to fuel pump Control Modulator (F.P.C.M.).

wire this directly to ground.