I'm a happy owner of a 'new' 87 Westy. I've got a couple questions for you:

1. 2nd battery, mine already had one installed. It has a battery
behind/under the passenger seat and another under the rear seat. It also has
a relay behind/under the driver's seat. How can I tell if these batteries
are wired correctly so that when camping and running lights, etc. I do not
run down my starting battery?

2. What do people use to clean/flush out the drinking water system? I just
got mine working, and I believe it hasn't been used for many a year. I
filled the tank to test the system & discovered I needed to replace the
pump. I left the water in there and 5 days later I got my replacement pump.
When installing it I noticed that the old pump and hose were slimy to the
touch. I'm pretty reluctant to drink out of there until I clean it up. Any
suggestions/comments? 

Thanks,
-Roger