Almost without exception the low side is on the right, because that's coming
FROM
the condenser up front and INTO the compressor, and high side is on the
left, which
is coming OUT of the compressor. Right (low) side usually has a blue cap on
it, left
(high) side usually has a red cap on it. Simple layout diagram here:
http://www.freeautomechanic.com/airconditioning.html
bob

On Thu, May 20, 2010 at 4:58 PM, B Feddish <bfeddish@netreach.net> wrote:

> OK, once every spring I like to amuse myself by thinking I can get the A/C
> fixed.
>
> I want to throw some dye in there.  I can never remember which is the low
> and high sides. Is the low side the right hose or the left hose if I am
> staring at it from the back of the van.  I have the standard aftermarket
> unit from '83 on a WC engine.
>
> Thanks,
> Bryan
>