Having issues with my AC going in and out. One day it will blow ice cold air and the next it will blow hot air. I replaced the AC compressor, the expansion valve, and the line from the compressor to the condenser that has a pressure switch built in. I am assuming this is high side pressure switch? Where is the other pressure switch located? This is the only thing I can think to try next and I cannot find it. I have searched google, forums, youtube and there's nothing specific to this model. Thanks