The disconnect switch that is inside the coach is the salesmen's switch. On the solar charger. Are you just not seeing the little red light or is something else saying the solar charger is not working?
If you are just not seeing the little red light, do not worry. The light is there to provide a warm fuzzy to the coach owner. My light was our for months before I got it fixed. During that time, the solar panel kept doing its' job.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours