tach hookup - JeepForum.com
 
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post #1 of 6 Old 12-12-2002, 04:15 PM Thread Starter
KG4PAM
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tach hookup

could someone give me some pointers on tach hookup? i just got one and the instructions are a little vague. there are four wires on it, a green for tach signal, a black for ground, a red for ignition 'on' power, and a white for lights. the one i have a question about is the green. according to the instructions, i am to hook it up to the coil? if so, which side (pos or neg)? i have done the TFI upgrade, is hookup still the same? thanks for your help in advance! jairus


'81 CJ-7 Got it when I was 16!
'06 Hummer H3, boulder gray, Adventure Package(electric rear locker and 70:1 crawl ratio BONE STOCK)
'71 Kaiser-Jeep M35A2 Deuce and a Half cargo truck, with winch. <for sale>
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post #2 of 6 Old 12-12-2002, 09:37 PM
SamFromCO
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It hooks to your coil on the TFI setup but I can't remember which side and it's cold and dark outside. I'm thinking the negative side but since I have a 50-50 chance of being wrong, I probably am. I think that I hooked mine up to the wrong side first and it didn't work so using my tremendous power of deduction I hooked it up to the other side and it did.
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post #3 of 6 Old 12-12-2002, 10:58 PM
Jeep Daddy
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Yes, hook up is the same. I can't remember either but I think it is the negative side. I'd do the same as mentioned. Try it, if it doesn't work, change it. Also, you may need to configure your tach for 4 cyl if I remember correctly. Yes, I know, that sounds weird. Trust me, I read it on this board today. If you have the Mopar TFI, your tach needs to be set for 4 cyl. Do a search on Tach. You can read for yourself. HTH

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post #4 of 6 Old 12-13-2002, 06:49 AM
Scrambler82
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Cool

It usually hooks up on the distributor side of the coil.

Scrambler82

Do it right the first time !
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post #5 of 6 Old 12-13-2002, 09:55 AM Thread Starter
KG4PAM
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thanks! i searched 'tach hookup' on google and found how to as well. it looks like the negative side! thanks for your help!
btw, i may have got my acronyms mixed up, but the TFI i was talking about is the ford Thick Film Integrated distributor cap and coil upgrade, not fuel injection. jairus

'81 CJ-7 Got it when I was 16!
'06 Hummer H3, boulder gray, Adventure Package(electric rear locker and 70:1 crawl ratio BONE STOCK)
'71 Kaiser-Jeep M35A2 Deuce and a Half cargo truck, with winch. <for sale>
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post #6 of 6 Old 12-14-2002, 09:02 PM Thread Starter
KG4PAM
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tach works great! thanks for yall's suggestions! jairus

'81 CJ-7 Got it when I was 16!
'06 Hummer H3, boulder gray, Adventure Package(electric rear locker and 70:1 crawl ratio BONE STOCK)
'71 Kaiser-Jeep M35A2 Deuce and a Half cargo truck, with winch. <for sale>
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