2009 Maxum 1800 mx

[Annahanna]

Hoping someone can assist. We bought our boat a few years ago. We have 2 batteries and battery switch. There is no power going to any of the gauges therefore they don’t work. Bilge works so there’s power to that. Any thoughts on what the cause could be? Was wondering if when replacing batteries a wire got lose with the battery switch or would that not cause this issue? Thanks