I saw Bob talking about behind the "cheeks". I unscrewed the two vent screws on the passenger side and pulled that out and was met with what seemed like a couple controllers/computers and a host of wiring. I did see the compressor/pump/whatever and of course see the water backing up out of that large vent hole from it. I just can't seem to figure out where the drain tube is or if mine are missing. Anyone have pictures?

Thanks!

 

EDIT:: This is for an Xj6 Series 2. My fingers got ahead of my brain and I forgot which section I was in (it's been a long day). Sorry for the trespass and speaking out of turn.
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I think you would have to get to the evaporator (by tearing up the whole inside of the car) and lay hands on its mount Deep in the guts of the car, to see where that tube begins.

I nearly disassembled a Series 3, but I never got to the evaporator and didn't see any drain tubes Inside the car.

I do have a picture of where the Left drain exits the car though, if that helps you any.

You can see the inspection cover in the side of the tunnel to give you an idea of location. Because of exhaust pipes and trans mounts I couldn't get a good picture of the Right drain.
(';')

 

The tubes can easily be seen from under the car. One on each side of the tunnel. I unclogged mine with a piece of a clothes hanger. A lot of water came out. My car is a 1996 XJS.
RagJag