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How To Hook Up Ac Gauges?

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Troyota answered
I'm going to assume your car has 134A. So once your find the two caps on the system, high side and low side, they are in different areas depending on the make. The gauges are designed to only fit the proper outlet on the car so that is stupid friendly, but you pull the collar up while pushing the the fitting on to the a/c system port. Release the collar, and spin the knob (just above the collar) in a clockwise motion to depress the shrader valve in the a/c port and BAMM! You have a reading on your gauge(minus a BAMM noise, I was feeling a little EMERIL)

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