Gail Stanford

Yes, there is a fuse for the low beam lights on the 2000 Suncruiser. It is located in the fuse box under the dash on the driver's side. The fuse is labeled "low beam" or "headlights". If the fuse is blown, it will need to be replaced. If the fuse is not blown, then the problem may be with the wiring or the relay.

For the water pressure regulator, it's recommended to set it at 45-50 PSI (pounds per square inch) to protect your RV's plumbing system from high municipal water pressure. As for the black water flush, a pressure regulator is not necessary since it's an open-ended system designed to handle higher pressure for effective tank cleaning.