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- - 77 A/C Vacuum Diagram (https://67-72chevytrucks.com/vboard/showthread.php?t=569315)

FCShively

03-05-2013 11:08 PM

77 A/C Vacuum Diagram

Does anyone have a A/C Vacuum for a 77?

Thanks in advance

FCS

FCShively

03-05-2013 11:09 PM

Re: 77 A/C Vacuum Diagram

I meant A/C vacuum diagram

gchemist

03-06-2013 08:58 AM

Re: 77 A/C Vacuum Diagram

What do you need to know? Wiring is connected in series. Power to low pressure switch -->high pressure switch ---> good ground. Power to low pressure switch comes from dash position switch. If low or high pressure switch activate, power to compressor is turned off.

FCShively

03-06-2013 12:47 PM

Re: 77 A/C Vacuum Diagram

I have everything wired, it is the vacuum hoses from the control head that I need a diagram for.

Thanks for the reply,

FCS

gchemist

03-06-2013 02:45 PM

Re: 77 A/C Vacuum Diagram

Oh, miss read title. I'll have to check my 83 factory manual. It may a diagram. I don't think I've ever seen a vacuum diagram for A/C.

I searched a nice link on info but didn't find one there either.
http://www.chuckschevytruckpages.com/

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