Locating the Airconditioning lo service port 1995

That should be the right port. Low side is the thicker hose and lines.
The fittings are opposite for R12 and R134.
Are you using an R134 hose connector ?

Locate your AC compressor.
The low pressure service port is located on the back of the compressor where the high and low side connections bolt to the compressor.
Look on this line about 4 inches or so back on the line.

Hope this helps.. Best of Luck

FOLLOW AC COMPRESSOR SUCTION SIDE FROM THE ACCUMULATOR CANISTER TO THE SMALL EVAPORATOR LINE GOING INTO FIREWALL LOOK FOR LINE WITH A BLUE PLASTIC CAP.THATS YOUR LOW PRESSURE CHARGE PORT.

it is possible just to make sure go to a auto zone or advance auto have the counter person come out and check he may assist you installing the Freon but always better safe than sorry good luck

The low side port should have a blue cap covering the valve. Even if you tried to connect a low port hose to the high port, it will not fit because it is a different design. it should be located between the compressor and the evaporator.

It is most likely on the dryer,or right next to the dryer on the low side ac line(larger ac line)If this was at all helpful,please rate,thank you.

start by checking the plugs, then see if you got spark at all the plugs, check for vacuum leaks, worn wiring, fuel pressure,

Did you check the acumulator? There is a port on it, that is the low side port. Keep in mind that if you have to recharge the system it is because other parts need service (leak in the syst) and whatever refrigerant you put in it will leak out again. The system may work temporarily or may work inefficiently. Also may sure that there is oil in syst.

Where is the AC recharge port located on 1995 Buick Skylark