You need an Extend-a-stay.  Google them. The first hit I got was
http://www.pplmotorhomes.com/parts/lp-gas/50525.htm though do so research. I
use mine so I can use the green bottles for my Propex. You want to do the
exact opposite which is use your attached tank for external cooking items.
The Extend-a-stay does both so pick which hose you will need when you
purchase it.  Bus Depot had a clearance on the deluxe kit. It took me over a
year before I put it in and the unit itself was defective. My fault though
since I let it sit a year. I bought just the T from a 3rd party (and under a
different name) and actually it still turned out cheaper getting the Bus
Depot kit since it came with the extra hoses, etc.

Bryan

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jonce Fancher
Sent: Tuesday, July 07, 2009 7:53 PM
To: vanagon@GERRY.VANAGON.COM
Subject: On Board Propane used outside

Hi all
I went on a search for some white gas for my coleman stove. Found the
Last can at cabelas today. They do have a conversion to run Propane
in this stove. I still have the stove in the 85 Westy. Propane is
fine and all in there but Im sorta the outdoor camper/cooker. SO has
anyone or does anyone know how to Plumb the under body propane tank
on my 85 westy to use the propane in the tank for my Stove and
lighting and hot water heater (yeah I know, Im a wimp camper!). I
really don't want to use the little green bottles. I can but just
dont wish to. I do have the refill thing to refill the small green
ones if need be. I also dont wish to carry a 10 or 20 lb propane tank
as well. I can and will if I need to but if I have the propane under
the bus is there a way to get to it?
Thanks oh great VW camping gods
Jonce