If you are new to boat electrical systems, I would strongly recommend that
you find a local marine electrician to help you plan your electrical system.
The point being is that you should not try to duplicate the electrical
system on a 25 year old boat. If you are going to the expense and effort to
rewire it, you should upgrade the electrical system with modern components
and concepts, particularly if you are planning to cruise extensively (and
why else would you own a Westsail 32).

You should consider the needs of DC refrigeration, communication, inverter,
etc. I am not saying you have to have all of these (yes, I realize that the
Pardy's get by without much) but you may want it someday. At the minimum, I
would install a new DC panel and extra house batteries. This will give you a
sound foundation to build on.

Take a look at the DC wiring diagrams in West Marine's West Adviser on the
web. The diagram with a house battery bank, a separate starting battery and
a battery combiner to link them is a good, sound design.

Good luck,

David