IT'S THE TRUCK!
Well, after 2 hours of trouble shooting, a new continuity tester bec. old one had a blown bulb, I am finding that it is probably the actual trailer wiring in the truck. I tested the 7 pins in the wiring harness, and only the Hot and Right Directional have power (probably the brake too but didn't check that). The REVERSE and LEFT DIRECTIONAL do not get any power. When left directional is on, Hazzards, and of course when truck is in Reverse. So, it looks like a trip to the dealer is required unless someone can check their harness pins and see if they get the same thing.
7 Pin Harness Config.
7 o'clock is the Common so always touch that.
1 o'clock is the HOT - always lights when touching it with common
3 o'clock is Right Directional - that works
9 o'clock is Left Directional - that does NOT work - no blinking light on tester.
Center pins are the Reverse Lights - They do Not light the tester either.
Well, the silver lining I guess is at least I found this out now, now in May when pulling the trailer onto the beach.