Generally our oil, volt, fuel, and temp gauges aren't susceptible to electronic noise. A shielded wire is always a safe bet, and we also use stereo filters on our speedo's to get rid of unwanted noise. Also check where you have your gauges grounded to and see if any other electronics are also grounded there as you could be getting bleed through from the grounds.
Here is a link to the gauges we have available on our website:
http://bit.ly/FullSweepAXYellow
Thanks,
Bobby
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