I have a two battery setup with a perko 1/2/all/off switch. How it is hooked up now is that on battery #1 it runs engine, lights, bilge,blower and radio, on battery #2 there are a couple wires on the pos that are connected to fish finder,depth sounder, courtesy lights, macerator pump,cig lighter.When I switch to battery #2 it also runs bilge,blower,ect,how is this possible if they are connected to battery #1?<br />The switch is wired as follows: bat #1 pos to switch #1 bat #2 pos to switch #2 starter to common on switch. Is this correct? Why does the accessories on battery #2 work when switch is on Bat #1? and vice-versa? Need suggestions 