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Ok so I've traced my funky AC problem back to the vacuum pump not being switched on, the pump itself works, the relay works, and most of the terminals for the relay work, the 12V+ that feeds the coil works, the 12V+ that feeds the pump works, an the wire that goes to the pump work, the only wire that doesnt seem to connect to either a grounded source or a powered source is the one that controls the other side of the coil and needs to be grounded for the pump to work. now where the heck does this wire go? From the best I can decypher the hayes manual, it goes into some other relay and then into a vacuum control solnoid, where is the solnoid and how can I check that its even working anymore?