On my 80 westy the biggest culprit was that battery/ water tank monitor.
there's a connector behind the top drawer? Find it and unplug it.
Al Brase

Brian Wasson wrote:

> Hi all,
>
> I've noticed that while my van sits unused something is drawing my
> battery down over the course of a few weeks, and I'd like to find what
> the problem is. I do have a multimeter, but am unsure about how to go
> about searching for a rogue circuit. I followed the recent thread about
> checking things at the fuse box, but don't really fully understand what
> I'm looking for. How does one test a circuit at the fuse panel to see
> if there is a current draw even when the van is off?
>
> Any suggestions/help would be most appreciated!
>
> Brian W.
>