stupid stupid

[SteveE]

When putting my starting battery back in the boat today, I stupidly thought I remembered the polarity of the cables without double checking. Sure enough, sparks and now after correcting the polarity, nothing, no trim, no display on Yamaha digital display and no starter.
Please tell me there is a just a fuse that blew and nothing more major. I looked around in the battery compartment and under the center console but nothing blown that I could see.
All accessories are working fine (lights, horn, bilge, etc.)
This is a 90TRLD.

[boats.net]

There is a 20amp inline fuse on motor that will blow if battery cables are hooked up backwards, check the engine fuse.