It's your boat wiring.

Seems like none of the manufacturers have figured out we are loading our boats with accessories and what they install is just not adequate.

The answer is to install a small fuse block under the console fed directly from the battery used for your electronics.

I like this one . Feed it with a pair of 12 gauge wires running to the battery with a 7-10A fuse or breaker in the positive wire at the battery. You can put your electronics fuses in the box and wire straight to them from the box. I use the Johnny Ray terminals at the battery to make the connection.

My boat had an extra switch spot in the dash, so I added a lighted switch just for my electronics in the feed to the box.

Be glad to talk you through the process if you need more info.