You won't find a labeled "compressor cycling switch". To diagnose why your AC compressor isn't engaging, you'll need to check:
* Compressor Clutch Relay: This relay is typically located in the underhood fuse box or a separate relay center. Its location varies slightly depending on the specific S-10 configuration. Consult your owner's manual or a wiring diagram for your truck's exact location. Testing the relay involves checking for power and continuity.
* Pressure Switch: This switch is usually located near the AC accumulator (a cylindrical component in the AC system's refrigerant lines). It monitors the refrigerant pressure and signals the relay to turn the compressor on or off depending on the pressure. A faulty pressure switch can prevent the compressor from turning on, even if the relay is working correctly.
It's highly recommended to consult a repair manual specific to your 1995 Chevy S-10 for precise locations of these components and for troubleshooting AC system issues. Improperly handling AC refrigerant can be dangerous, so if you're not comfortable working on automotive AC systems, it's best to take your truck to a qualified mechanic.