Here's how to locate it:
1. Open the hood of your Mustang GT.
2. Look at the front of the engine. You'll be looking for a large, round, metal component with a belt running around it. This is the AC compressor.
3. Look for a label or tag on the compressor to confirm it's the AC compressor.
4. If you're still unsure, refer to your Mustang GT owner's manual for a specific diagram of your engine compartment.
Note: The exact location and appearance of the AC compressor can vary slightly depending on the specific year and model of your Mustang GT.