RE: Moving aux equipment to the aux battery
The instructions posted so far are correct AFIK, that's the common
approach.  BUT, there are some exceptions.  I know that on my '90 Westy we
had to do some additional work on the back of two of the plugs going into
the fuse block.  I had the help of someone that knew what they were doing.
My understanding is that there are some electrical quirks in the '90-'91
wiring setups that are a little different.  I'll be glad to be corrected on
that but I do know that the change over required some additional wiring in
my '90.