I have been having periodic electrical problems. I have a 2015 Z9 and now and then have various electrical devices not function. I have had my front depth finder not work when everything else does. I have had both depth finders working but my aerators, bilge pumps and other things not work. This weekend, during a bass tournament, and a livewell full of fish, my livewells quit working. The master switches red light didn't come on but, my depth finders did work. Nothing else on the accessories switches worked thought. That included horn, lights, bilge pump, aerators and etc. After the tournament was over. I started my boat and everything was working correctly again. Could t his just be replacing the master switch or can you just get a master switch by itself?