Special-K... It sounds like you have a plain On/Off switch that has been rigged as it was not intended. Sound right? If you rewiring I might suggest two switches as in photo below:
You can do almost what you want to do with one swith as in your Diagram #1 but you'll still need a new switch. With two switches as above (Perko Diagram #2) I have a greater range of options. Off, Both motors on one battery (either battery #1 or #2), both motors on both batteries (All), Starboard motor on #1 and Port on #2 or visa versa. By the way
NEVER shut of motors by the switch, use ignition key. Hope this gets you on the right track. I like to think...two motors, two batteries, and two switches; minimum. Some people go with three or four batteries.
Oh, one last point, the motor is always charging the battery its connected to by the switch.
Boston Whaler, "MUMBLER", 24' Outrage (1996), twin 175 HP Evinrude Ocean Pros.
Snowball, the cat...
[This message was edited by Mumblerone on 04-07-03 at 10:22 AM.]
[This message was edited by Mumblerone on 04-07-03 at 10:23 AM.]