Thread: OM617A Tach Amp
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Old 04-19-2008, 02:59 PM
techguy512 techguy512 is offline
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Join Date: Apr 2005
Location: Austin, TX
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Quote:
Originally Posted by cphilip View Post
Is there an advantage to messing with one that works?
Never mess with anything that works.

The '85 model year gets its tach signal from the EGR computer or some such thing. Your '83 should have an electronics module inside the screw-off cap. When you look up inside the cap, you should see six pins hanging down.
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