Hello Jim and Peter,

Both good thoughts.

Peter your ideas reminded me that when I am experiencing the problem I am also hearing some type of beeping noise almost like a muffled backup (engine in reverse) beeping sound. I assumed it was from the Jake Brake each time it comes on, is there a audible noise from the jake brake when its applied???

I also plan on checking all lights, the tow equipment etc. It is interesting that the problem has magnified when towing. I was having some intermittent issues before, but each time I was not towing but driving without the toad behind.

Also I have completely inspected and carefully taken each battery terminal and cleaned and sprayed each secured tightly all battery terminals, all good here.

I really feel now more than ever that the jake Brake plays some role here. It is also Ironic that I had Prevost Car go into the computer and change the Jake Brake performance recently as well,????