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Which wire on the coil of a 1995 f150 with the 4.9 inline six is negative

Installing a tach and having trouble locating which wire on the coil is negative

Posted by Anonymous on

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lijaynoel123
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SOURCE: No spark inline six turns over strong, has fuel,

take the cap off of the distributer grab the rotor and make sure it does not spin freely if it dooes the pin had sheared off the gear if not replace the ignition module on the distributer if if there you should see it if not it will be on drivers fender

Posted on Aug 10, 2009

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elshaddai159
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SOURCE: negative wire on coil to hook up tach on 1995

If you have a good look at the coil, it should still have a positive and negative sign on it somewhere. Try not let the extra wires confuse you too much. These are for the ignition module in the distributor. let me know if you need further clarification after you've had a look.

Posted on Apr 02, 2010

roniecon
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SOURCE: putting in a autometer tach in a 1994 camaro

It should be black,but look on the coil,and it will have a negative sign in the coil next to the terminal like this - Now this terminal,will go to the ignition.

Posted on Jun 01, 2010

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Positive side of the coil should be connected to the wire from the ignition switch, negative side of coil goes to the points set. (joined with condenser). Disconnect any external condenser attached to the coil and run it as I just stated. Pay attention to coil polarity (they are marked). If it runs OK that way, then re-attach the tach. If the problem returns, the tach is bad. A coil that's been overheated may become internally shorted so I'd use a different one and then after it's running correctly, you could put the old one back just to see if it's still good. if it is, save it as an on-board spare. I'd also check the alternator charge rate. If it's putting out too much (over 13.9) it will also damage the coil. On boats, there is little air flow in the engine compartment even with a bilge blower running. On all the boats I've had, I always mounted the coil on an adjacent wall and used a longer center (high tension) wire. Coils really don't like getting hot and that helps a lot in keeping them working.

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According to wiring diagrams online... good luck with this.
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hi it got to the neg side of coil the wire that go to disributor should be a connector there for testing i think it green

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