post #1 of Old 02-10-2010, 06:24 PM Thread Starter
Magical_Merlin
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1976 CJ5 
 
Join Date: Jan 2008
Location: Renton, WA
Posts: 67
CJ5 Factory tack to MSD6A

What wires off of the factory tack do I need to use to get my tach working with my MSD6A box? Thanks.

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post #2 of Old 02-10-2010, 07:15 PM
boomvader
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1984 CJ7 
 
Join Date: Nov 2009
Location: Phoenix
Posts: 950
Quote:
Originally Posted by Magical_Merlin View Post
What wires off of the factory tack do I need to use to get my tach working with my MSD6A box? Thanks.
This thread might help:

http://www.jeepforum.com/forum/f8/fa...module-718734/

-boom

Boom's CJ-7 Project (Completed in 2011) http://www.jeepforum.com/forum/f8/bo...oject-1085653/
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post #3 of Old 02-10-2010, 07:23 PM
JeepHammer
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1973 CJ5 
 
Join Date: Aug 2007
Location: South West Indiana
Posts: 11,175
Try this diagram and your factory tach will work...



The large RED wire that USED to supply current to the ignition module & ignition coil,
But is now only used to supply an 'On' signal to the 'Small Red' MSD wire is where you hook up the tach adapter...
Along with the tach adapter 'Ground' and Tach Adapter 'White' wire that will plug into the 'Tach' terminal of the MSD CDI module.

Last edited by JeepHammer; 02-10-2010 at 08:03 PM.
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