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Hi, where is the low side r12 charge port?

(1990 Mercedes-Benz 300SL)
in Antelope, CA on August 23, 2012
No cold air.
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on August 23, 2012
May want to take it to a ac shop. Low side fitting larger of the two
look on the larger hose that goes into car.
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of Greg's Orange Auto on August 23, 2012
its the smaller of the 2 fitting and its located around compressor area. poss on compressor or low pressure line
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