elecrical instrument wiring

PostPost by: seniorchristo » Wed Jan 24, 2024 8:35 pm

I am rewiring the dashboard of my Plus 2. Are the electrical instruments (fuel gauge. water temp gauge and oil pressure gauge) sensitive to which terminal gets power or ground? I don't see any markings on them. Thanks
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PostPost by: billwill » Thu Jan 25, 2024 12:46 pm

I doubt that the slow instruments are polarity sensitive as the active thing inside is just a heater.


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PostPost by: seniorchristo » Thu Jan 25, 2024 5:02 pm

Thanks billwill!
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PostPost by: Andy8421 » Fri Jan 26, 2024 11:13 am

Bill has pointed this out before, but worth pointing out again -

Fuel and water temp gauges need to have a regulated supply via the voltage 'stabiliser', the oil pressure gauge is fed directly from an unregulated supply.
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