The 1980 300D with R4 compressor (compressor located on left/drivers-side
under powersteering pump).

Low pressure connector is found on top large line on passenger side.

Trouble locating High Side connector.
I find another AC line connector behind the alternator, again on a large line.
This would seem to be the high side.
This other large line leads immediately to the condensor in front of the radiator.

Is it the high side connector ?

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
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