call a hvac guy some of the ones that do homes have an adapter for cars. the connector is bigger on cars than homes and it depends on the coolant new cars you can do it yourself old cars you wont be able to get the coolant with out proper ID. my brother inlaw does it sometimes for cars at 35$ a lb of freon and a svc call, think cars take r134 new ones have another number i forgot that one.. i ll sell ya a can of r22..lol 30lbs. catch a truck on the road and ask if they can do it for ya....
