Quote:
Originally Posted by Derby
There is an excellent post by JSeery dated 4/6/2015 concerning gauge operation. After reading this information it appears to me the the gauge operation is unaffected by a change from positive to negative ground. Is this conclusion correct?
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Yep, the gauge doesn't care about current flow direction. If you go to 12v negative ground all you need is the voltage reducer. That is what Ford did when they went to 12v, they used the same basic gauge system with the addition of a voltage reducer. Many now prefer the Runtz units (one required per gauge).