Need an electrical unit that controls vacuum routing HVAC system

[Jtull55]

According to my mechanic, my 1974 Imperial LeBaron needs a new electrical unit that controls the vacuum routing of air to the various interior vents. He provided pictures which I will attempt to upload to this post . Its mounted to the heater box and is black in color.
Any help or advice in locating this part or otherwise correct this problem is much appreciated

 

[CBODY67]

Might Google that 7-digit Chrysler number on the unit?

 

[Sixpactogo]

Sounds more like the time delay for the defog system. If so, it only runs the compressor for a short time and basically not needed if it don't work.
This?

 

[Big_John]

One of these? NEW 1974-1978 Chrysler New Yorker Imperial ATC A/C Push Button Control Switch | eBay


It does control the vacuum, and part is an electrical switch, but nothing electronic controlling vacuum.

 

[Jtull55]

Might Google that 7-digit Chrysler number on the unit?

Nothing came up, unfortunatly.

 

[Jtull55]

Sounds more like the time delay for the defog system. If so, it only runs the compressor for a short time and basically not needed if it don't work.
This?

View attachment 684989

Hmmm

Sounds more like the time delay for the defog system. If so, it only runs the compressor for a short time and basically not needed if it don't work.
This?

View attachment 684989

Maybe. I'll run it by my mechanic. Thanks!

 

[Sixpactogo]

Is it mounted on the bottom of the heater box with two screws and a blue and brown wire hooked to the two terminals?
If so, it is the time delay relay that runs the compressor for a short time to de-fog the windows. That is all it does and really is no big deal if it don't work.
It is PN 2837697 and was used for a number of years on B & C bodies with AC