EFI - Using WOT Cutout Relay for AC

Bullitt

Packin' Heat
Founding Member
Jan 13, 2000
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Houston, TX
Well I'm at the stage in my re-wiring project on the car where I'm finally starting to make some terminations and finalize things.

I converted my '67 to EFI (using a '90 Mustang harness with A9P computer) a few years ago and things have worked great; however in that time I've never had the A/C charged and working.

Well, that's going to change! Car had factory A/C, so this is the factory style harness for the A/C and uses the two control switches.

Those familiar with the EFI swap, am I wiring in the WOT relay correctly? I'm interpreting the function of the A/C switch on the heater box to effectively be the same as the "A/C Pressure Switch" on a Fox (basically turns the compressor on/off).

BTW, the fan wire will trigger the high-speed relay for my fan whenever the A/C is on (but I'm assuming will stay on regardless of the compressor cycling by wiring into this location).

Thanks for any help!

67 AC Wiring.jpg