DC system wire diagrams for 2000 506?

[Carpe Diem]

I really do like my 506 but since I like to work on it myself, I find the owners manual a really useless POS. My 2006 Sea Ray 44DB manual had about 30 pages of very detailed wiring diagrams. Carver's idea of a wire schematic is a Joke! Are there additional manuals available anywhere that have more detail or even a legend that identifies circuits by the number tags on the wires. I found a #10 brown wire marked B8 paired with a B8 black ground wire in the bilge. both wires were terminated with an environmental butt splice heat shrunk to isolate. The wires are bundled next to a midship bilge pump. I am thinking it may be for an optional high water pump or alarm but with out a decent wire schematic, who knows? I started tracing it and it is part of a bundle that goes to a primary ER breaker panel but did not find the other end. Some other bilge pumps had wire tags B6 and B7 so I am guessing it is some kind of optional bilge system. The wire has no voltage so I assume it runs to the Main DC panel but just not attached to a CB. I ran out of steam before I took on the task of gaining access to the back of it to find out. Any Ideas?
Carpe Diem

[g36]

Yep totally agree it's not much for tracing wire location just general location, but if you have the oem manuals for your boat then you got all there is.

[Viper]

One of the items brown wires are used to connect is any type of pump. So could be any system that utilizes a pump but the code on the wire certainly leads one to believe that it was a bilge pump option. It may have been an option never installed or something a previous owner disconnected and removed.