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Discussion Starter #1
I have the 2014 RT and I purchased the 5" Monster Tach with shift light (MOPAR). I was told by Summit Racing that I need the MDS tach adapter to make it work with the modern car electronics, so I bought the MDS tach adapter. Now speedsouth has told me that the MDS tach adapter will not work with Dodge? What is the fix to get this tach installed???
 

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You cant get a signal from the ignition coil as it fires each coil twice but you can get a readable signal by tapping off an injector. However in some situations the injector doesnt recieve a signal, such as sudden deceleration so the tach may drop out and then come back.

Why the tach, the car has one already, I could see the need for the light but you can run one of thoes without a second tach.
 

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Discussion Starter #3
Only for looks and giggles. It makes the Challenger Look a little old school with the monster tach on the dash or out on the hood!
 
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