Tom,
Have you by any chance checked the Winnebago drawing files to see if they still have your unit on file?
The pdf's they have are very good.
In fact, here is one address for the first automotive dwg for the 1998 F32 Brave
http://www.winnebagoind.com/diagram/Wiring.htm
If they don't, let me know I might be able to id the wire for you.
Mike