Paul, If you'd like to see that same vacuum tube from the other side of the pontoon, simply pull up the carpet on the parcel shelf and remove the cover behind the drivers seat ( the one over the ignition module). There you should see that same vacuum line coming into the car from the rear, just under the hood latch pull. It goes from there into the center console and finally ends in the A/C control switch. From the fire wall back, it goes out into the pontoon, out into the engine compartment, to the hot water valve which is just in front of the engine. John Weaver ETDOC RED DMC #10527 [Non-text portions of this message have been removed]