[SCBillandJane]

Thank you for your help Jeri and Dick. I opened and removed the shower box. Some part was leaking. Rather than mess with something we don't use, I chose to plug the supply line with brass pipe plugs. In an effort to help others on the road that need a quick fix, the plug can be purchased from Home Depot. The part was Watts number A-823 Pipe Plug, 1/2" MIP. We can now have inside water without dripping all over the camp ground. This will make it easier to continue our trip to Alaska.