Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.
Electronic tachometers work by counting pulses generated by the ingition system, alternator, tach signal generator or magnetic pickup sender
The tach is hooked up to +12VDC, Ground and one of hte signal sources listed above