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Old 09-30-2013, 10:25 AM   #1
ab_70chevy
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Join Date: May 2012
Location: Wichita, KS
Posts: 63
A/C and heater wont turn on

I move the switch and nothing happens. Blower motor won't blow on low, medium, or high. I think its either the switch or the resister but I was just curious if someone else has had the same issue and I would check their fix first. Thanks for the help fellas
-Andrew
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Old 09-30-2013, 12:19 PM   #2
VetteVet
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Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,716
Re: A/C and heater wont turn on

Check the fuse in the fuse panel \ 25 amp\
Check for 12 volts on the orange wire at the switch.
Check for 12 volts on the orange wire at the resistor with the switch on.
Check for 12 volts on the orange wire at the relay
check for 12 volts on the purple wire at the blower with the switch on.

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metallic green 67 stepside
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1965 Harley sportster
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Old 10-01-2013, 06:21 AM   #3
MikeyMan
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Join Date: May 2008
Location: S.W. Chicago, IL.
Posts: 317
Re: A/C and heater wont turn on

MOST importantly,

Make sure the blower motor has a good ground!

Drove me nuts, thought the blower was bad. Add an extra wire to firewall or fender.
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