yenko guage question
I just bought a Yenko guage as it was explained to me. The guage goes from "." - 8000 does not have a "0" but just above the dot or "." it has a small 500. Questions are:
1. Is this guage rare?
2. How much is it worth
3. What year would it be from?
4. Do I need a sender with this guage or can I hook it straight up to the engine and power using the 4 wires it has (red, green, white, and black)?
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