Where is the a/c relay switch and fuse?

Hello, The A/C compressor switch is located inside the HVAC control unit (part of the HVAC control panel on the dash), the relay is inthe main fuse box under the hood, and some of these have a fuse on the interior panel and/or exterior panel. Your owner's manual should have a diagram, but, if not, google around for a fuse box diagram and print it for your glove box. It will come in handy.