grounding connections

2011 Sea Ray 260 Sundeck having an electrical problem I think is a result of a bad ground. Engine starts, but none of the accessory devices turn on ( blower, lights, bilge pump, radio, water pump) No continuity between negative ground Terminal on fuse block that grounds these devices, and the...

Morning, One of my winter projects is to go through the boat and cleaning all the grounding connections. I have seen some corrosion that I want to address. The large zinc on the back of the boat has a corroded/ bad connection on the back of the boat and I want to start cleaning that up and...