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Old 09-03-2016, 09:54 PM   #1
Join Date: Sep 2016
Location: Northeast Ohio
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Default tach and battery voltage gauge not workīng

The Tach and battery voltage gauge are not working on my 2003 Maxum 2400SC. I have looked for loose ground wires and have checked the fuses, and nothing seems amiss. Any ideas?

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Old 09-04-2016, 03:38 AM   #2
Lt. JG
Join Date: Aug 2016
Posts: 31

try cleaning the terminals

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Old 09-04-2016, 04:28 AM   #3
mmwjr's Avatar
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 7,784

Welcome aboard

Try removing the wires and clean the connections and reassemble.

If that does not work try rotating the cylinder selector on the back of the tach to see if that fixes the tach.

Finally use a voltmeter to verify power is getting to them.
1997 2400 SCR
5.7 Vortec / Bravo 2
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