Skip to main content
Gerry | Vanagon
Checking account...
← vanagon.com home · Continue the discussion in the forum
Subject:Re: Battery diodes
Date:Thu, 1 Jun 1995 13:30:26 -0300

At 11:14 AM 6/1/95 CDT, David Carment wrote:
>The 82 Westfalia has a way of "monitoring" the state of the battery - a
>switch with three dodes is located on the stove panel. Ours no longer works
>-even though the battery is fully charged. Does anyone have any ideas on
>how to fix or check the switch/diode set-up?
>
>Thanks - David C.
>

They may be Zener diodes, which allow current to pass once you exceed a 
certain threshold. ie. green LED on at >12.5v.  They can be blown if you 
reverse polarity and push with enough current/voltage. Pull' em out, read 
the numbers on the diodes and get a (cross-ref'd) replacement, RadioShlock 
or similar. First try a bench test with a variable power supply, maybe using 
a light dimmer switch and your battery. Might just be a burnt out green LED  
       bye tim s.