> > G Mann wrote:
> > 
> > The rear unit is plumbed in series with the front unit as
> > far as the coolant flow, most likely.

> Jim wrote:
> Unlikely.

> My read on it is that there are TWO expansion
> valves, all is is wired in parallel.  The
> compressor/condenser is sized up accordingly.

That's how my Suburban with rear A/C works.  Two valves.


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