VDO gauge testing

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Boston MA
#1
A couple of questions for you guys.

How do I test a VDO vision series gauge for functionality? I have either a faulty sender or a faulty gauge. The wires are good. The gauge is powered and the needle goes to zero but it won't measure oil pressure. There's no reading. The sender wire has contiunity. Is there a resistance value across poles on the back of the gauge?

Any help is much appreciated cause it's my oil pressure meter and I sort of need it working.

Thanks

AL
 


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