A-251002-AI Switch Lo Pressure, Line mtg, 2 wire (20 psi)One New Aftermarket Replacement A C Low Pressure Switch for Case IH (International Harvester) Tractors, Combines, and Harvesters This aftermarket replacement low pressure switch (A C low pressure cut out switch) mounts in line on the air conditioning refrigerant line and protects the A C compressor from damage by cutting power when refrigerant pressure drops too low. The switch uses a 2 wire connection and threads directly into the A C line. It is