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kdjones2000 kdjones2000 is online now
In the Fires of Hell.....
 
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Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 3,779
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There is a red plug that the wiring harness from the DME to the engine has that needs to be connected to your dashboard wiring harness. The tach signal goes through that connector.

If your other gauges are working, however, I don't think that would be your issue.

Sometimes these tachometers just die - the one in my '87 924S was dead when I got it.
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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
Old 03-26-2019, 01:33 PM
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