Thanks everyone for the input and suggestions. When you deal with Old Car--the KISS theory applies--Keep It Simple Stupid! Changing preferences, etc. may have worked but the HDMI cable is the route to go. Simple enough to plug in at both ends and hit HDMI 1 on my input selection on the television menu and I am up and running again! Appreciate the help Herk! Your private messages and responses here actually made this a simple solution.
Randy and Patty
2015 Sabre 33 CKTS-6 Platinum Edition
Reese 16K Slider hitch
2014 Ram 2500HD Crew Cab 6.7 Cummins Diesel