tach and battery voltage gauge not workīng

[nycomari]

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?

[Willy.Fire]

try cleaning the terminals

[mmwjr]

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.