Hello, The Port will be on one of the lines going to the AC unit under your hood AC unit is on the left side of firewall it has a silver tank on it also, somewhere on one of the lines there will be a plastic cap sometimes blue in color or it may have a L on it for Low side of system, there is one more cap but is a different size and the Freon you buy will not fit on the wrong port, so find the Port that your freon can hose will fit on, and that is your fill Port, good luck, remember you can not put it in the wrong Port, can not happen.
