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The Norfolk Broads Forum / Broads Boat Owners Q & A / VDO domestic water tank gauge
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Posted By Discussion Topic: VDO domestic water tank gauge

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Antares_9
Sep-19-2007 @ 8:59 AM                           Permalink
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Put a tester across the terminals and check that the resistance is changing when you move the float around, most European senders run between 10 and 180 ohms IIRC. if that all seems to be OK then get a 40 to 100 ohm resistor from Maplins and that should give a reading on the gauge if you connect it in a 12v circuit. That should at least identify if either component is faulty. Some VDO gauges are a little more complex, containing their own internal voltage stabiliser in order to prevent false or wildly fluctuating readings and these must be wired correctly unlike a simple resistive gauge which because on a boat they are operating on an isolated return circuit will work either way round, unlike a car which is ground return. Hope that helps. In the meantime I will have a look for a diagram of the more complex VDO gauge.



This message was edited by Antares_9 on Sep-19-07 @ 10:06 AM

Antares_9
Sep-19-2007 @ 10:14 AM                           Permalink
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Steve,

If you PM me your private email I will send you a PDF file (cant attach here) of the complete data sheet. Smile


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