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Old 07-29-2017, 01:36 PM
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andrewb70 andrewb70 is offline
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Quote:
Originally Posted by dontlifttoshift View Post
Yep, transducer goes in the high side and becomes an input.

The wire that runs from your AC controls to the compressor also becomes an input.

Then a wire runs from the ECU to the compressor, that is an output. Also need an output from the ECU to the C6 pwm fan controller.

The output to the compressor will not run unless it sees 12v in from AC controls _and_ pressure is between 30 and 400 psi, matching Vintage Air's cutoff on their trinary.

The fan control side has been covered in this thread already.

The problem you may have with the HP is limited number of I/O available.
Donny,

Why is there a need for the wire from the AC control to be an input to the HP?

I am trying to help Larry, but I don't know enough about AC systems, although I am good with the Holley system.

He has a 0-5v sensor installed in the AC system, but there seems to be very little variability in pressure. I sent you a PM on PT...if you have time...

Andrew
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