Found the problem. Hope this might help someone else out. All the suggestions above were good and I followed through with all of them as well as others. After all, I kept thinking what is the common denominator to both lights and I kept thinking "ground". Keep in mind one bulb was NEW and the other old, but as I recall last time we went camping the directionals did not work. Well, I took out each bulb and checked with my VOM the continuity between each contact point and the side of the bulb (ground). Only one contact point in BOTH bulbs had continuity. I installed 2 NEW bulbs that I had purchased today and checked them. Behold, continuity with ground on both contact points. Plugged in the truck to the RV and tested. Surprise EVERYTHING worked. What are the odds of having to new bulbs that are bad?