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Holley Terminator – Dominator A/C Add-on module

A/C Add-on module for Holley EFI – Dominator, Terminator X  and Terminator X Max – Operate air conditioning compressor and integrate with Holley ECU function


SKU: TermX_AC Category:


Planning on installing A/C with your Holley EFI?
Designed to work without any changes to the stock Holley program parameters, this module will operate the A/C compressor clutch as well as take care of interfacing with the Holley EFI system to manage the A/C shutdown controls and IAC kick. This will also signal the Holley ECU to trigger the electric fans when the A/C is on.


  • A/C Relay and 10A inline fuse
  • Factory GM Connector for GM A/C compressor (can be cut off and replaced with any 2 wire A/C compressor connection or just use the 12V clutch wire to operate a single wire compressor, like a Sanden unit, and leave the ground wire unused)
  • Leads for binary A/C pressure switch
  • Lead for IAC Kick supplying a ground input to the Holley ECU when the A/C system is requested on
  • Lead for A/C shutdown to disable the A/C clutch based on the Holley ECU output settings
  • 2.5″ x 1.5 “x 1” sealed module with 5′ leads can be mounted easily out of the way
  • Covered in split braided loom to match the looks of the Holley harnesses

Additional information

Weight .05 lbs
Dimensions 4 × 4 × 1 in


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