This is how I did it

http://shufti.wordpress.com/2011/01/19/aux-battery-connection-to-fuse-panel/

Mark D express some concern at the time as whether the internal circuitry of the fuse panel could take the load through connection E3. I can report that it is works fine, but we the proviso that I don't have very heavy loads on the aux battery. Biggest load would be the stereo and additional amplifier.

I have a schematic of sort of my aux battery wiring including auxillary dunes panel here

http://shufti.wordpress.com/2013/06/24/vanagon-auxiliary-fuse-panel-schematic-update/

Hope this helps

Alistair

> On Jun 3, 2014, at 6:31 PM, Gilles H Turmel <gilles.turmel@SYMPATICO.CA> wrote:
> 
> Hi,
> Which wire to the fuse box should I connect to my aux battery to get the accessories on my aux battery?
> Best regards.
> Gilles Turmel