Yamaha 9.9 Charging

[spirit76]

When my engine is running the depth finder goes haywire. The digital voltage meter does also

When running just on batteries (dual 12 volt) gauges work

Any ideas ?

thanks

Russ

[boats.net]

Check battery cable connections are clean and tight, test charging system on motor.

[spirit76]

Re:Yamaha 9.9 charging

Thanks for the info