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Adding aftermarket tachometer

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Old Jun 18, 2002 | 11:15 PM
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textruckr
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From: Waco Texas!
Adding aftermarket tachometer

I would like to add an aftermarket tach to our '94 F-350. Pep Boys has a small one with about 3" gauge face. I had installed one of these previously on an '86 Suburban I owned (in fact, the one I traded in on the F-350). It was pretty straight forward to install. There was a connection marked "TACH" on the distributor cap (HEI, coil-in-cap). Is there a similar connection on the external coil for the Ford trucks too? It is usually no problem to find switched 12V power, ground and the instrument lamp feeds, I just don't want to be looking all over trying to find the coil to ground tap for the tach.
Any help from you guys would be appreciated.

Texas Truck - r
 
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Old Jun 22, 2002 | 09:45 PM
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Adding aftermarket tachometer

yes, textruckr. The tach trigger wire will always connect to the negative coil terminal. It will be marked either - (minus) or tach.
 
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Old Jun 23, 2002 | 12:23 AM
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Adding aftermarket tachometer

Thanks for the reply.
Will there be a pinout or male spade terminal on the coil itself, or should I look for either of those markings (the "-" or "tach") on one of the connectors that feeds the coil?

Texas Truck - r
 
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Old Jun 23, 2002 | 04:19 PM
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Adding aftermarket tachometer

 
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