Google "SPTT switch"  (single pole, triple throw) and find one with a high
enough rating, (100 amps @ 12v, or 1200 watts).  Leave one pole unwired
(off). It will be BIG!

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Rocket J Squirrel
Sent: Thursday, September 20, 2012 9:51 AM
To: vanagon@GERRY.VANAGON.COM
Subject: [Nearly Off-Topic] Seeking Battery Switch

I'm looking at rewiring my house battery charging system.

I want to be able to switch between charging the battery from the alternator
(lots of amp for quick bulk charge but not high enough voltage for full
topping off of deep cycle battery) and charging off my 3-stage DC > DC deep
cycle charger (insufficient amps for good bulk charge but great for
finishing off the charge to the higher voltage).

To do this, I'm looking for a manual 3-position battery switch. I've already
looked at West Marine's offerings and I can find either two-position
(off/on) switches, or four-position (off/1/2/1+2) switches.
The latter could be used but it's dangerous as the 1+2 position would
connect the DC > DC charger's output to its input, resulting in a collision
of universes and possible smoke.

Two off/on switches could be used, but again, it would be possible to
accidentally turn them both on, resulting in that collision of universes
thing.

Anyone know of a three position (1/2/off) battery switch?

--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.