Jump to content

Snap-on Tach/Dwell MT816B question


p15-1948

Recommended Posts

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

Link to comment
Share on other sites

Black and red wires to battery...

The third...green? To the distributor terminal of coil or directly to the distributor terminal.

  • Like 1
Link to comment
Share on other sites

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 by keithb7
  • Like 2
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Terms of Use