Finally got my problem solved! The repair shop where I took the trailer (my dealer is on the other side of Chicago) "claims" they have the proper testing equipment. In fact they even called Tekonsha for the parameters for the Prodigy 2 and they "thought" it was reading/sending properly. Went through the entire wiring system on our trailer and couldn't find a wiring problem. Re-checked my truck, nothing. Short story, the controller went bad, they replaced the old controller for a new one and viola, I have a trouble free trailer again!!
When I called to check on the progress of our trailer they had asked me why "I keep adjusting the power all the way up on the controller". I told them I hadn't touched the adjustment! That's when the light went on! NEW CONTROLLER!
In their defense they work mainly on motor homes but I'm wondering if that was the right place to take my trailer.
We leave Saturday for a 5 week trip to the west coast, I don't need/want brake troubles when we get out of the flat lands.
Dan