aftermarket tach installation- where does the green wire go? - JeepForum.com
 
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post #1 of 8 Old 08-30-2013, 05:58 PM Thread Starter
jennkent5454
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aftermarket tach installation- where does the green wire go?

I have an aftermarket tach I am wanting to use under the hood for setting the timing. since my coil doesnt have a negative terminal post to hook the green wire of the tach to which wire should I connect it to? I assume to the green wire coming from the coil but want to be 100% sure first.

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post #2 of 8 Old 08-30-2013, 06:00 PM
CJ7ROB
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Use one of those wire tap connectors that taps into a wire. You use a pliers to push the metal tab down into the wires. They aren't the best though..

http://tech.bareasschoppers.com/reso...ap-connectors/
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post #3 of 8 Old 08-30-2013, 06:02 PM Thread Starter
jennkent5454
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exactly what I was going to do but really need to know if I use the green wire from the coil?
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post #4 of 8 Old 08-30-2013, 06:11 PM
CJ7ROB
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Quote:
Originally Posted by jennkent5454 View Post
exactly what I was going to do but really need to know if I use the green wire from the coil?
If that green wire on the coil is the negative one, then yes tap into that one.
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post #5 of 8 Old 08-30-2013, 06:19 PM
shadoow
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the terminal on the coil with the green wire is the negative terminal. Also called the tach/test terminal. If you remove the plastic top cover on the coil where the wires attach and look at the coil terminals the one for the green wire should have a "-" next to it.
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post #6 of 8 Old 08-30-2013, 06:27 PM
WindKnot
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Quote:
Originally Posted by CJ7ROB View Post
Use one of those wire tap connectors that taps into a wire. You use a pliers to push the metal tab down into the wires. They aren't the best though..

http://tech.bareasschoppers.com/reso...ap-connectors/
You're asking for trouble with those. They leave you wide open to corrosion. the BEST way is to cut it, twist the wires together and solder it with a weatherproof shrink wrap sleeve to go over it. Yes, it is worth the trouble.

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post #7 of 8 Old 08-31-2013, 07:37 AM
CSP
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Take that plastic cover off and there's a terminal there you can use to attach the wire to.
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post #8 of 8 Old 09-01-2013, 10:17 PM
BigJack1976
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Don't know if you have figured it out yet ,but yes the green wire is the negative coil wire.
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