I have a quick question. I have a 98 F150 Supercab which I bought a couple of weeks ago. I noticed that anytime I turn on the inside air (not even the a/c or max a/c, but anything at all) I get some water leakage afterwards. Yesterday I heard it dripping on something hot (I'm assuming exhaust manis, but it could have been the exhaust pipe or engine itself...) and noticed some water on the ground. My question: does the a/c run no matter what when you turn on the inside air, even if it is the defrost or panel/floor? If so, I won't worry too much about it. I drove this morning without the air on and didn't notice any noise as I got out, but will check again on the way home today.

Any help appriciated.