Where os the A/C refill port for 1998 Honda Accord

it connects under your hood thers a can with a measuring guage on it you should buy that one so you can tell how much to put or you can put to much you can cause a leak ...turn on your a/c with the car started put a/c on high max then find the line with the blue cap i believe it will only go into one line look like a bicycle tire stem in the middle