Thanks again for your input! I’m trying to troubleshoot the electrical
“myself” so that I can gain experience and understand my boat’s setup. I have some good news! An electrician friend of mine came by and helped. The yellow 20 amp fuse had corrosion
, so we scraped it off And got the switch lights to turn on and got a current
in 3 of the 4 switches. There are 3 tethered connections on the 4th switch that run the spreader light and mast
light and a windvane
(and maybe the deck
lights). I’m going to try and take the screws out From the buss and see if they’re corroded and test the current as I go. I still have no idea what the 2 Additional dead end wires Coming from the negative terminal switch/knob Are for...? Will keep posted.