Red wire came out of plug on alt.
SOURCE: 1997 Chevrolet Lumina stalled
I think they are 3 sets.
One on left side of motor
One on right side of motor
One at passanger side door once you open it!
Never hook both cables up to the main power sources car. just the red is needed always ground the ground out to metal on the engine not the battery!
SOURCE: A/c and heater air blows only in windshield vent
That means you lost your engine vacuum source and defroster mode is the default position. Check for the vac. line coming off engine to the firewall under hood if that vac line isn't damaged or leaking,check under dash allthe way up to the vacuum selector switch for the HVAC if you have good engine vac at siwcth around 17-18 inches of vacuum. Then it must be a faulty switch assembly.
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