Sorry I did not get back to you sooner. I have been on a delevery and we dicided to spend the night in a marina and head out early tomorrow to beat the storm.
The wire from your electrical panel also goes to the C terminal. What you end up doing is selecting which battery bank to run your boat from. Also I have provided a link to show you the bus bar. What you describe could be a bus bar, but I dont think so. I would have to see it.
Cap'n Dave http://www.westmarine.com/webapp/wcs...ingsystems.htm