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#1 |
Registered User
Join Date: Jan 2007
Location: Hesperia,Ca
Posts: 7
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Need Help with Heater/AC for 70 C20 pleases!!!
First I want to say Hi.
I am not new to this board but have been away for along time. So here is the problem my 70 C20 is missing everything in the cab for the Heater/AC and the vacuum lines and wires are all cut up. And I am trying to put back together. I found this pic on one of the Threads is it correct for my truck?? and if so. Where is the Control Head Vacuum Switch and Vacuum Source locations. Last edited by C20 Blues; 11-16-2008 at 09:56 AM. |
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#2 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Need Help with Heater/AC for 70 C20 pleases!!!
That should be the right schematic for your truck. Here is another schematic that you will need for the wiring.
Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#3 |
Middle-aged Curmudgeon
Join Date: Jun 2008
Location: Independence, MO
Posts: 753
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Re: Need Help with Heater/AC for 70 C20 pleases!!!
The control head is built into the heater/AC control unit in the dash. It's about the size of a quarter, and rotates when you move the appropriate control lever.
The vacuum source is the port on the rear of the intake manifold between the carburetor and distributor. |
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#4 |
Registered User
Join Date: Jan 2007
Location: Hesperia,Ca
Posts: 7
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Re: Need Help with Heater/AC for 70 C20 pleases!!!
Thanks for the help.
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#5 |
Account Suspended
Join Date: Sep 2008
Location: Alva Florida
Posts: 668
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Re: Need Help with Heater/AC for 70 C20 pleases!!!
i know when i got my 67 chevy 3/4 ton truck it was missing a lot of that under the hood and dash
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