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Where to start troubleshooting a bad tach

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Where to start troubleshooting a bad tach

Old 07-21-2011, 12:41 AM
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Default Where to start troubleshooting a bad tach

One year old and the tach stopped working. Where should I start looking?
Of course I checked behind the dash and its getting 12v power but I stopped there.
Any ideas what to look for next?
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Old 07-21-2011, 01:51 PM
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First question is which wiring harness do you have? Is it a 10 pin harness plug or the 14 pin? Does it have a digital to analog converter to work your gauges? Things aren't as simple as they used to be. Easiest thing is to connect a known good tach to the signal lead and see if it works.

Originally Posted by wowchad
One year old and the tach stopped working. Where should I start looking?
Of course I checked behind the dash and its getting 12v power but I stopped there.
Any ideas what to look for next?
bobl is offline  

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