Question about 1998 Chevrolet Cavalier

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On a 1998 chevy cavalier what color wire do i hook the green off my tach to

I hooked all other wires up except the green. It says to hook to the negative side of coil. Maybe i should tap into the tach on the dash

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  • Chevrolet Master
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The green wire from the tach goes to the negative side of the coil or if its an HEI distributor it will connect to the left of the hot wire going. to the distributor.

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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SOURCE: 1998 chevy cavalier wont start

Sounds like you are getting power to everything but the engine.
Was there a ground wire to the head that you may have left off ?
Hope this helps
Sam

Posted on May 11, 2009

  • 186 Answers

SOURCE: installing tach on 1997 airstream motorhome with

That should be the white wire rom the dist to coil. eather way you will not hurt the tach if you were to get it wrong. There are only two wires. I would look at the distributor and on the top of the cap there it writing and it will say tach an you can plug it directli into that.

Posted on Aug 02, 2009

  • 366 Answers

SOURCE: I need to know which wire on a 91 chevy c1500 coil

neg wire on coil

Posted on Sep 24, 2009

co7196
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SOURCE: cant find the negative wre on the coil on a 1987R20 w/outer coil

distributor side of the coil.

Posted on Oct 15, 2009

  • 1608 Answers

SOURCE: Help! I cant find the green wire under my hood to

the coil is in the distributor.Just look on the end where the wires go into the distributor and you will see where it says tach.,batt.,There is a terminal where you can hook up your tach. wire.Hope this helps.Good luck.

Posted on Apr 20, 2010

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1 Answer

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Who manufactured the tach? Maybe they have a web site and instructions? Did you tach come with instructions?

I looked at autometer instructions for your vehicle, have to use an adapter, it ties into the power wire for your coil pack. The adapter costs about 97 bucks, not including tax.

Different tach manufacturers may have different hook-ups?

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Need to know how to hook up a tachometer with a shift light on it there are four wires


The Black wire will connect to body ground, and it should be a good solid ground and if this wire is not grounded well then you might receive a primary voltage shock if you touch anything that is metal or grounded inside of the vehicle when the engine is running.

The Red wire should be connected to power when the key is in the "Run" position only, and a good place to find that source is one of the "IGN" connections at the fuse panel using a covered female spade connector. Use a test light and be certain that the connection only has power when the key is in the "Run" position, and has no power when the key is in the "Off" or "Accy" position.

The White or Yellow wire should connect to the "LPS" connection at the fuse panel next to the LPS fuse using a covered female spade connector.

The Green wire will connect to the "-" negative side of the ignition coil or the primary side of the ignition coil, and for later model GM HEI equipped vehicles this will be the "Tach" connection next to the main "Bat" connection on the distributor cap if the ignition coil is mounted inside of the distributor cap, or to the "Tach" or "Test" lead that runs from the negative side of the ignition coil if the ignition coil is mounted separate from the distributor. To locate the lead run down the wire from the negative side of the ignition coil and the lead should break off from that wire and it should have a tag on the wire that will say either "Tach" or "Test" (sometimes it is just an empty black wire connector) and that is if the lead does not come straight off from the wire connector at the ignition coil. If there is no lead you can get a wire tap connector to tap into the wire from the negative side of the ignition coil and then use a covered male spade connector to connect the Green wire from the tachometer to the wire tap connector.

Here is a diagram to help assist you although it might be hard to make it out, and let me know if you require any further assistance.



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there will be a wire that goes to to power. then ground im sure you know that. also possibly a wire for your lighting. just splice that into the pwr wire coming off the dimmer. to get rpm's it should be a green wire coming off your tach connect it to the negative side of your coil pack.

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