Quote:
Originally Posted by ndutton
It depends on the gauge. The typical gas engine tachometer such as you'll find with Moyer gets 12VDC + and - plus a wire to the '-' terminal on the coil.
Another style of gauge (diesel style, I have one) gets 12VDC + and - plus a signal from the alternator. Unless your alternator already has an AC tap for this purpose I would avoid this type of tach. It also requires calibration because of different pulley ratios on different engines. In other words, much more hassle.
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Thank you! I believe any tachometer suitable for 4 cylinder engine will work?