CJ tach wiring - JeepForum.com

 
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post #1 of 5 Old 01-07-2012, 10:47 AM Thread Starter
dd4bama
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1985 CJ7 
 
Join Date: Oct 2009
Location: Fort Benning, GA
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CJ tach wiring

I bought a used tach and am in the process of cleaning it up for installation. The back two wires were unattached, and I don't know which wire goes where. Can someone identify these and tell me which goes on which side (red and red with white stripe), or if it even matters? Thanks.



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post #2 of 5 Old 01-07-2012, 11:18 AM
JeepHammer
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1973 CJ5 
 
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Location: South West Indiana
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Sure,
Look at your ignition switch.
There will be a connector just a little way from the switch where the tach goes in the dash, even if there isn't a factory tach.

Hooked up one way, it will work, the other, it won't.
Look at the wires in that connector to tell where the 'Strip' wire goes,
And look at the wire out to the ignition.

Since the wires are removed, you will just have to test it and see which way it works.

Is there any markings at the terminal connection points?
Like an 'S' for 'Switch' and an 'I' for ignition out to the engine bay?
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post #3 of 5 Old 01-07-2012, 01:23 PM Thread Starter
dd4bama
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I looked, but there is nothing on the tach itself. I'm not sure I'm advanced enough to really identify the connector you are referring to. Is it a factory snap-type connector?
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post #4 of 5 Old 01-07-2012, 03:51 PM
gpower77
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It will be on the right side of the steering column, close to the firewall, and will be a heavy gauge red wire that is plugged together with a black connector. Unplug that connector, and have the tach in series, so red wire coming from the ignition switch, to tach, then tach to the firewall side red wire connector. May have to try swapping the wires on the tach around if you loose voltage to the distributer.

Garry
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post #5 of 5 Old 01-07-2012, 04:07 PM
88gmc1
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