They are on the new A/C control head that I'm going to install in my '85 Z28.

It came off a '91 RS w/ TBI.

They are dark green on terminal 4 and black on terminal 5

I think I can trace 5-Black to the blower motor relay. I'm stumped on 4-Dark green

I can't locate them on any wire diagram

My Z has the typical 1- Brown 2- Brown/white 3- Light green

Thanks in advance

Art

 

Maybe I'm seeing the picture wrong but, you have the vacuum lines circled.
And you are asking about electrical wiring ?

Hvac controls from 82-92 should all be 'plug and play' for blower control and controls. Back-lighting is the only discrepancy I can think of.

 

It might be hard to see, but I Paint brushed in Green and Black on terminals 4 and 5.

This isn't the actual control head, I just used it to demonstrate.

I can provide a pic of the pigtail from the '91 if that might help.

They are electrical not vacuum lines.


Art

 

Wiring diags here: http://www.austinthirdgen.org/index.php?pid=19

Scroll down to the bottom, you'll see 1992 and all kinds of stuff, including heater controls and A/C controls.