Suspension problem
1999 Cadillac Deville V8 Two Wheel Drive Automatic 80,000 miles
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WHAT MAKES THE COMPRESSOR COME ON, WHEN THE CAR GETS A LOAD OR WHEN I TURN THE IGNITION SWITCH, THE COMPRESSOR DOES NOT COME ON . BUT I HOT WIRED IT . IT CAME ON . WHAT MAKES THE AIR RIDE SUSPENSION WORK.. IS IT THE COMPUTER OR THE IGNITION SWITCH.