Into the low side service port.
You can find the low side on the a/c compressor or on the low side suction hose...........
Its in the biggest line trace it from your a/c compressor.
The EVAP Service port is on the firewall on the passenger side, right next to the low side service port for the A/C.
The AC low side port on a 1999 Cadillac DeVille is against the firewall. It is on the larger of the two hoses going to the AC compressor.
The low side service port can be found on top of the air conditioner compressor. The low side service port will have a blue top.
The low side service port on your 1993 Mitsubishi Eclipse can be found on top of the air conditioner compressor. The low side service port will be labeled as the low pressure port.
The smaller port is the low side.
The 2002 Chevy Cavalier low side service port can be found on the top of the air conditioner compressor. The low side service port will be labeled as the low pressure port.
On a 1992 Dodge with a 3.9L engine, the low-side port for the air conditioning system is typically located on the larger diameter line, which runs between the compressor and the evaporator. It is usually found near the accumulator or the firewall, closer to the passenger side of the engine bay. Make sure to check for a blue or black cap, as this designates the low-side service port. Always ensure the system is off and properly depressurized before attempting to service or connect to the port.
The low side AC service port is located behind the left side of the radiator. On the engine side. You will have to remove the black air tube that is attached to the air filter box to gain access to the service port. The service port will be an aluminum tube with a black cap on it.
There is no high side service port only a low side.