Our '02 325 has that same switch panel. I'll take it off later today and look at my wiring and I'll send you a private message identifying the wire colors.
Just a caution, though, I don't have any faith in the consistency of wiring colors used in the house section. From what I've been able to find so far (third season of ownership), I think the installers just grab whatever color comes to hand when they're building the coaches.
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and now ex-RVers, as of 08 Dec 14.