Hi, where is the low side r12 charge port?
Thanks on 1990 Mercedes-Benz 300SL

No cold air.

Asked by for the 1990 Mercedes-Benz 300SL
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.
1 more answer
its the smaller of the 2 fitting and its located around compressor area. poss on compressor or low pressure line