Mike, checked the chrome bezle and it doesn't seem to have been interfered with so I suspect it to be genuine unmolested unit. As I suspected I think this gauge is genuine for the transition model 63-64.
I do however have a problem with it. I finally, yesterday, got around to investigating why it doen't work and found the wiring at the unit disconnected. The (brown) Power wire was showing 5.5v with the ignition on but the engine not running and ranging up to about 10 volts with increasing rpm. However at 5.5v or so with the engine idling at around 800rpm the gauge indicates about 5000 rpm.
Does anyone (Ron?) know what the proper voltage range should be for the unit and whether what I'm experiencing is a fault with the gauge or the remote voltage sensing module?
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