Still trying to understand my (new to me)1984 Hunter 25.5. The electrical panel has a number of toggle switches on the left (looking at the panel): cabin lights, miscellaneous, battery, running lights, etc. which are self explanatory. Here are my questions:1. I don't understand what the toggle for the "battery" does? Everything seems to run OK without that switch being thrown.2. There is a single toggle above the panel and I am at a loss as to what that's for. Any comments?3. There are fuses to the right of each toggle switch that have an arrow indicating how to remove them. However, I have not been able to remove any one. Is it possible that they are so old that they do not spring out when turned. If so, what can I do to correct the problem?