I did this on mine and at the time you could still go to the dealer and get the harness which back in 05-06 was 125 bucks. It uses the power from the same connector for the power seated option cars. the pump actually mounts on the passenger side and the harness runs across the trans tunel and connects to the powered seat connector on the driver side as there isnt one on the passenger. Air hose wise there should be two hoses that come out of the bottom of the back support of the seat I ended up having to by a double male brass hose barb to make mine work since I didnt buy the harness.
I actually just made a harness for this cause I was cheap. I picked up a 9 core stereo wire I had laying around and figured out how to wire it in.
or you can just buy this thing comes with the plugs and harness connectors should mate up to your seats just fine assuming the hoses are coming out of the seats http://www.ebay.com/itm/1998-2002-Po...1YqPwm&vxp=mtr