Gauges going all the way on startup + smoke

You can leave OEM ones in place and add a triple gauge set under dash, that way it retains OEM look with new reliability.
You dodged a bullet so far with smoke incident in my opinion.
Good luck.
The gauges worked finse until I had the initial "smoke incident" :S. I like the look of the original Rallye gauges they look awesome from my perspective and still work after 52 years.

I saw a setup somewhere in this forum from Dakota Digital that looked very close to the original look with modern components, unfortunately it was a custom made set of gauges, I looked in their web page but is not listed yet. I have not taken the time to call them ans ask them how much it costs

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