When I bought my 2020 I was a little disappointed to see that blazer does not use marine grade electrical wire (tin coated). Don't get me wrong, my boat is great. I have been in some terrible squalls and powered through them without a flaw. However, if you fish salt water it is only a matter of time before copper wire will literally disintergrate and quit carrying current. I caulked (sealed-off) my center console panel, however I forgot about the trolling motor plug/ trim switch. After two years of salt water fishing I started having some issues with the trolling motor outlet, on-off it would go, had to jiggle the cord constantly.
Today I opened it up and was required to cut back 2 feet of wire to repair the damaged copper (fortunately for me they had several extra feet of wire coiled up inside). After cutting to good wire I soldered the ends before reusing the plug. I also had to cut back on the trim siwtch wire, had to remove the plug section completely, it was so corroded.
If I were you I would look at this as soon as possible. Cut out the bad peice of blown up wire and then caulk the switch. That goes for your panel switches too!