Ever wonder how you can install an aftermarket tachometer on a vehicle with no distributor and multiple coil packs? MSD has the answer with the Distributorless Tach Driver! The Tach Driver wires inline to the coils’ shared 12 volt supply wire. It senses the current through this wire and converts this information into a 12 volt output signal that most aftermarket tachometers and other rpm devices use as a trigger signal. housing measures only 1.5”x 3.5”x 2” and is potted with a polyurethane compound for vibration and water protection. 8913$83.99 Don't see what you want? .......... Need help? Or, IF THERE IS NO ORDER BUTTON AVAILABLE on the part you want to buy, please call us TOLL FREE at 1-888-6 GO FAST(1-888-646-3278) Monday - Friday 8AM - 4:30PM Pacific Time and talk to one of our experienced Sales Agents. Some parts may not be legal for sale or use in California and other states on any polution controlled motor vehicles. Check your local laws for use. Copyright © GoFastParts.com all rights reserved. No part of this site may be reproduced without prior written consent.