No power to ingnition switch

[kalbers]

I have a 2011 crownline 21ss with a 4.3 liter mercruiser. I do not have power to my ignition switch. I checked every fuse possible on engine and under the dash. Where might there be a fuse that I have missed? Or is there another thing to check?
Thanks

 

[kalbers]

Found 90a fuse blown. How fun

 

[Silvertip]

Battery cables reversed?????

 

[kalbers]

I think I had the battery backwards when I took it out of storage the realized it was backwards