Tach wires

IDIoit

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my isspro tach only has 1 wire for feed as well, I grounded the other
 

Josh Oldenburg

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I grounded the one wire and sent the other one to the controller however it still does not read anything. Not sure if the sensors any good or if the controller needs to see a square wave instead of a sine wave

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chillman88

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It should be a square wave I'd think. It's just a hall effect sensor running off the timing gear.
 

Josh Oldenburg

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Right except for the sensor on IDIs is not a hall effect it's a speed sensor therefore creates a sine wave

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Josh Oldenburg

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Before I do that, I called US shift to ask them about the input requirements on their controller for the tach. It is set up from the factory for a digital signal IE square wave, but there is a jumper that can be removed behind the cover for the magnetic sensor that are idis use

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Josh Oldenburg

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So I removed the jumper and still had no tach. So I ohmed it and got 4.5 million ohms engine off and 2 million ohms running. That seems wrong

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