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Is there anyone out there who is willing to Email me a wiring diagram for a 1978 Vette, in particular i am look for the A/C part as i am trying to figure out why the clutch won't engage.
Your low pressure switch might be open. This will happen if refrigerant preasure is low. You may be low on freeon and need to be recharged. Or your thermostatic switch is open and need replaced.