Hi, where is the low side A/C charging port? Thanks on 1990 Mercedes-Benz 300SL

A/C is not cold.

by in Antelope, CA on August 23, 2012
2 answers 1 comment
ANSWER by , August 23, 2012
is this r12 or r134 system?
COMMENT by , August 23, 2012
R12 system.
ANSWER by , August 23, 2012
Follow large pipe/hose that goes into car low side port is LARGER than HI side.