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Old 06-07-2016, 01:22 AM   #4
Tazimafied
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Join Date: Feb 2015
Location: Ridgecrest, CA
Posts: 94
Re: Need help wiring a tach

Being a tach from the late 60's early 70's and going up to 8000 RPM I would assume this thing is for an outboard two stroke. Most similar automotive gauges from the same era that I have seen only show 5 or 6000 RPM. Mostly 5000. Hopefully someone else will chime in on this soon. You could also try some classic boating forums to see if they know what it is.
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