My husband installed a solar set-up on our 2000 model Class C motorhome. We found that we need to turn off our solar panels when we are driving. We were driving down the road one day, and our battery light came on. Apparently, solar panels were overcharging the chassis battery. We turned off the solar panels, and the battery light went off immediately. We do not understand the exact issue that would cause this, but if anyone has an idea, we would love to hear your thoughts.