A/C System

Depending on the year of your car these wires might be different. Verify with the power on and the A/C button on for 12V, and/or check continuity with the cabin plug.

A/C Request Wires by Year

  • 2010 2.0T: Yellow (pin 21, A/C select high) and Blue (pin 22, A/C output high) on the A/C control module. Below, on the passenger-side fuse box smaller plug, they're also blue and yellow.
  • 2013 3.8: On the larger plug, same colors.
Plug to the A/C controls in the cabin.
A/C-on wires at the passenger-side connector.
2013 3.8 — the larger plug leading to the passenger-side fuse box.

Keeping Stock A/C Function

Keep your fuse box wire harness and ECU. You can trim out the extra engine-control wires besides the A/C, and hide the fuse box under the battery: DIY battery-side relay box relocation (GenCoupe.com).

Holley Terminator X A/C

If you're running a Holley Term X setup you'll need:

  • Current Performance Holley A/C add-on module wire harness
  • Vintage Air 11079-VUS replacement binary switch, plus the matching pigtail

Compressor Brackets & Hoses

There are several ways to add A/C with brackets. This is the Holley low-mount setup for F-body on the passenger side. Take your stock A/C hoses to a local hose shop to be modified — cost was around $350.

Holley low-mount F-body compressor, passenger side.
Compressor fittings and modified lines.
Compressor clutch and hose routing.

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