I was looking for where the low side of the a/c so I can put the freon in the car cause it is hot a/c. I was looking under the hood and found both ports and it looks like the cool side is near the fire wall and the high side is near the radiator. But the low side (I think is next to the fire wall) is a different size and will not fit the normal a/c connector. Is there a special tool to charge the ac or is the low side next to the radiator. Any help appreciated. Thanks