p15-1948 Posted October 18, 2021 Report Posted October 18, 2021 Wondering if anyone has one of these, Snap-on MT816B. Looking at one online and it has three connections rather than two like my old (non-working) Sears unit. I'm going to guess it hooks to 1. pos side of battery, 2. neg side of battery, and 3. hot side of the coil. Can anyone one confirm, haven't been able to find any instructions online for this particular model. Thanks Quote
Dodgeb4ya Posted October 18, 2021 Report Posted October 18, 2021 Black and red wires to battery... The third...green? To the distributor terminal of coil or directly to the distributor terminal. 1 Quote
keithb7 Posted October 18, 2021 Report Posted October 18, 2021 (edited) I own the exact same dwell/rpm tool. To clarify, the 3rd connection, hook it to the wire from the coil that travels to the points. Clip it on to the little screw at the coil. Other 2 connections to the battery as Dodgeb4ya said. Be sure and hook up the unit (all 3 connections) before turning on the key, or firing up the engine. Otherwise Tach won’t work on your 6V system. Edited October 18, 2021 by keithb7 2 Quote
p15-1948 Posted October 18, 2021 Author Report Posted October 18, 2021 Thank you guys! This is the friendliest forum for guys just learning about flat head six engines Quote
p15-1948 Posted October 19, 2021 Author Report Posted October 19, 2021 the unit is on the way, thanks again fellas! Quote
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