I am doubling check if this is correct. I want to recharge my A/C and I am looking for the low side port. The High side port in on the front passenger side by the radiator. It has a black cap. I found a port labeled "Evaporator Service Port" located on the drivers side firewall. It has a green cap. It not next to the accumulator which is on the firewall but on the passengers side. Is the Evaporator Service Port my low side port.