I have a 72 vette. Was trying to figure out where the AC/heater relay is located in the car.....Help!!!
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Hello, any '72's out there???

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MICK - C3VR Lifetime Member #113
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There are different relays for each of these components.
The high blower relay is under the hood, on the side of the evaporator core "box", but the compressor relay(if so equipped) would be behind the dash


Joel Adams
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This is the problem I'm having.... when I have the ignition turned but not started air is coming for the ducts but I don't have the ac/heater switch on. It sounds like grumbling coming from the right hand dash and the compressor area with the hood rasied. I thought maybe the switch or relay maybe bad?????
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Joel Adams
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(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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If it's making noise it's probably the blower motor , if the noise changes or goes away when you increase the fan speed..the motor is probably bad. I've changed lots of blower motors in 70's GM vehicles. They have a little cooling tube that isn't enough so they heat up & the bearings go bad. You can change it from the engine compartment...it's a fairly simple job. You could also have so leaves etc caught in the squirrl cage...it happens over time
Good Luck,
Alan
Alan
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