06-24-2011, 09:30 PM | #30 |
Senior Member
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Re: Add a Tachometer
some tachs have a built in diagnostic or calibration or something like that and will go full scale when power is applied. Sounds like you got one of the tachometers that does this. Get her some gas and start it up to see if it works. You should be ok without soldering for testing purposes, but you will want to solder it for a permanent installation.
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