Originally Posted by flyromeo3
at my local car parts store ( r & s strauss they sell the adapter to re-fill the R-134. IT has a pressure gauge on it and you just screw it into the bottle.
It was a kit and I believe my friend paid 30-50 bucks for it.
I've had not so good experience using those kits. Personally, I'd have a shop do it. Better let them do it right the first time so it'll work for 10 years for sure.