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  #1  
Old 09-06-2010, 05:30 PM
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Default How to wire an rpm tach?

How do you wire an rpm tach on the 5.9s?
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Old 09-06-2010, 06:21 PM
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An aftermarket tach? If so, you'll connect the power wire (usually red) to a switched 12V source, the ground (usually black) to a good chassis ground, the tach lead (usually green) to the negative side of the ignition coil, and the illumination wire (usually white) to the dash lights.
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Old 09-06-2010, 06:37 PM
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Originally Posted by RamTech View Post
An aftermarket tach? If so, you'll connect the power wire (usually red) to a switched 12V source, the ground (usually black) to a good chassis ground, the tach lead (usually green) to the negative side of the ignition coil, and the illumination wire (usually white) to the dash lights.
Ok, pretty simple, thanks.
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Old 07-22-2011, 02:17 PM
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Quote:
Originally Posted by RamTech View Post
An aftermarket tach? If so, you'll connect the power wire (usually red) to a switched 12V source, the ground (usually black) to a good chassis ground, the tach lead (usually green) to the negative side of the ignition coil, and the illumination wire (usually white) to the dash lights.
Ramtech I did as you said but my tach isn't getting a RPM reading.Is this way of hooking it up not compatable with a 98' 1500 5.2 318?Or do I need an adapter?
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