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12 0.35 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
13 0.35 TN 5514 Low Reference A/C Refrigerant Pressure Sensor Pin 1
34 0.35 GY/WH 2700 5-Volt Reference 1 - A/C Refrigerant Pressure Sensor Pin 2

I believe that is the right switch, matches mine.

(4063) R134a Aluminum Weld-On Switch Port is the weld on port I used, search on ebay. There are also fittings you can crimp inline on a hose as well.