you get a qualified engineer to do it !
For refilling you only need the low side but if you have a manifold gage set you will connect to both to monitor the pressure on both sides, 50-60 on the low or suction side and around 200 on the high side.( typical)
low side never charge from high side
The low pressure side.
The low side will be located on the front side of the a/c manifold..........
yes
buy a charging kit of r-134a refrigerant attach to the low-side charging connection (NEVER THE HIGH SIDE) the low side should have a dust cap that needs removing
High side, If you charge liquid on the low side it can cause the valves of the compressor to break.
To the low side. Yes to the low side, on the suction side, larger hose on the a/c manifold behind the a/c compressor.
I believe it is under the air filter housing.
Behind the grille
The low-side port is located next to the compressor. It will have a cap on it. This is very visible..and will be where you charge your system. Your charging adaptor will only fit the low-side anyway. follow the directions to your charging kit carefully.
On the low pressure side. A charging hose will only fir on the low pressure side of the AC system.