My car also has the air pump installed but i dont know which hose it uses to fill tires from the pump to the tire, Just bought the car 1 week ago its a 1996 ssei.

You need to buy or make a hose. Make sure it'* long enough to reach the front tires.

Sounds like you're missing the accessory kit from the trunk. You should have found a leather bag back there with all sorts of goodies in it, such as a spotlight, flares, rain poncho, etc., as well as a fairly long air hose with a pressure gauge at one end. (That'* what the '93'* had and I'm assuming yours would be similar.)

I haven't looked but I assume you can find it on eBay, if the dealer doesn't have one you can order. (Seems to me that somebody here _did_ order theirs from the dealer, for what seemed like a really good price.)