Isolator

[John Hofstetter <hofs@domain.elided>]

>     
>             Alternator output
>                 |
>                 |
>                 |
>                 V
>      _______________________           
>     |                       |
>     |   O   <-  O  ->   O   |   terminals (arrows show diode bias?)
>     |_______________________|
>       B1       A       B2
>     
>       /\               /\
>        |               |
>        |               |
>        |               | 
>        |               |
>       Truck batt       Spare Batt
>     
>     Let me know if this is correct so I can set it up.  I want to get 
>     another battery for the gadgets so I don't pull the starter 
>     battery down accidentally.
>     
>        Thanks everyone,
>     
>
>     -Joel Brodsky

That's the way I remember it, Joel. I've been installing dual battery 
switches rather than isolators recently, but I've had a number of the 
isolators.
John H.