Q: low pressure port location? on 1991 Mercedes-Benz 420SEL

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab

Looking for the low pressure port to recharge the AC, but don't know where it is located under the hood. Would be really helpful if someone can provide a picture to pinpoint the location. Bty, already converted to R134a system.

Thanks in advance.
(3) Answers
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