Windshield wipers cycling without chassis batteries?!?!
My first thought is not about batteries, but rather keys.
I can't recall ever seeing a coach (or any other vehicle) that the wipers worked without the ignition or accessories on.
If the wipers are going it suggests power in circuit that should be dead, check your ignition cylinder or somebody rewired something and it's back-feeding some stuff.
Ted 'n' Laurie, plus Jackson (aka Deputy Dog, the Parson Russell Terrier 'fur kid') and, Rylie (who crossed the Rainbow Bridge June 14, 2012).