my gauges don't buzz.... just out of curiocity, where did you wire yours to and where did you ground it? Maybe if we get a consensus of where the wiring is, we can find a better way to wire them so they don't hum.
Mine are wired to the cubby light (i cut off the cubby light because I didn't like it, and I used the hole to put my Sirius radio controller wire through) and grounded to the big bolt behind the gauge cluster.
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