Tachometer connection
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Junior User
Joined: Dec 2003
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From: Spring Valley Ca
Tachometer connection
Tachometer Connection question
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I've got a 5.0 EFI engine in my 66 and am trying to get my tachometer hooked up. The wire i need to connect goes either to the coil or the EEC-IV, the directions for installation said to connect to the tach connection on the computer if available but i looked and did not see any connection. I cannot determine which wire to connect to on the coil itself. I know it is supposed to go to the negative side of the coil but am not sure which one is negative. I would appreciate some help on identifying the difference in positive and negative. I looked at a pin table for the computer and it shows what pin the wire is coming from but i havn't traced it back but suspect it will go back to the coil. Any help is appreciated
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I've got a 5.0 EFI engine in my 66 and am trying to get my tachometer hooked up. The wire i need to connect goes either to the coil or the EEC-IV, the directions for installation said to connect to the tach connection on the computer if available but i looked and did not see any connection. I cannot determine which wire to connect to on the coil itself. I know it is supposed to go to the negative side of the coil but am not sure which one is negative. I would appreciate some help on identifying the difference in positive and negative. I looked at a pin table for the computer and it shows what pin the wire is coming from but i havn't traced it back but suspect it will go back to the coil. Any help is appreciated
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Joined: Jun 2001
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I can't recall which one I used but my manual shows it as being the yellow wire.
You can pull the connector and you will see +/- stamped either inside the female coil connection or on the male connection, its on one or the other.
You can pull the connector and you will see +/- stamped either inside the female coil connection or on the male connection, its on one or the other.
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Junior User
Joined: Dec 2003
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From: Spring Valley Ca
Thanks jwtaylor, problem solved. The stamped marks were located at the bottom inside the female connector and the negative wire on mine was yellow with a dark green stripe. Thanks again!
Junior User
Joined: Nov 2004
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http://www.msdignition.com/downld1.htm this link will tell you all your tach,dist.,ignition boxes wiring with scematics,you can download it as a pdf file! good luck!
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