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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 03-12-2010, 11:17 PM
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Default 5.7 won't talk to the tach... help

I have an Autometer Tach in my 5.7 and I have tried their wiring diagram and MSD's. Neither seem to work. I sent the Tach back in and had it checked and made sure it works great.
Autometer's tach adapter did nothing... MSD has a GMR clip... does nothing... I am attaching to one of the coils. Any suggestions or diagrams I can try?
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Old 03-13-2010, 12:25 AM
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What year is your truck?
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Old 03-13-2010, 12:43 PM
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Did this?

http://www.autometer.com/download_instruction/0561B.pdf
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Old 03-13-2010, 05:11 PM
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Default

Yes, it was a bit of a pain and didn't work, in fact burned out the adapter. Hot Wire Auto told me to get the MSD 8918 and so far I got nothing there either. It's a 2004

http://www.summitracing.com/parts/MSD-8918/

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Old 03-13-2010, 05:35 PM
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Well tell your tach to appologize to the mighty Hemi. That should do the trick
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