When we bought our Gemini it was in San Diago in Mission Bay and had lots of salt
spray from the beach about 1/2 mile away and lots of switches were coroaded. One evening after we had just bought the boat I was reading at the salon
table and the lights started going off and on kind of weard like it had a ghost, I opened the back pannel of the electric
breakers and the main ground was coroaded almost black, I took the nut off and used a knife and scraped it clean copper and it has worked great ever sence. Our cockpit
light had a bad toggle switch and replaced it with one from Radio
Shack but I moved the light and replaced it with a double fixture with red and white LED bulbs it has a dimmer for either bulb, the red bulb works great for night vision sailing.