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Hi, where is the low side A/C charging port?

(1990 Mercedes-Benz 300SL)
in Antelope, CA on August 23, 2012
A/C is not cold.
Displaying 2 answers & 1 comments
Popular Answer
on August 23, 2012
Follow large pipe/hose that goes into car low side port is LARGER than HI side.
of Greg's Orange Auto on August 23, 2012
is this r12 or r134 system?
on August 23, 2012
R12 system.
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