Hi Ed,

I have my tank on the bench right now, but uses a different sensing
system. I think  David Beierl will chime in on this one, he's the
expert.

But that being said, it looks like the system works via a ring type
float with magnet in it activating reed switches in rod... what do
you think about that theory?

As for the resistors in the mix, David will explain :)

Are you on the southern part of the island? If so have you tried
Malahat auto wreckers?

cheers from fellow islander

alistair

On 6-Aug-10, at 7:14 PM, Ed Wiebe wrote:

For about 2 years now we have been travelling/camping not knowing how
much water we still have on board because the sensor has a burnt out
part.  If you go here: http://picasaweb.google.ca/ewieber/
WestyDomesticWaterTankLevelSensor# you can see the broken part.  What
is it and is it easy to find a working replacement.  It shouldn't be
hard to solder a new part in.
Another option: Does anyone have a working unit from a parted out
Westie?  What would be a reasonable price?  This is from a 1990
Wesfalia camper.  I live on Vancouver Island in British Columbia.
By the way, can someone explain how the unit senses the water level?

Ed Wiebe