Thanks Mike, the batteries did load check ok, but you never know. I am going to try removing the wires off the Vanner one at a time to see if maybe I can isolate it that way. The weird thing is that it takes about 5-10 minutes before it comes on and then it begins by flickering and finally it stays on bright red. When I shut down and restart it may not come back on until I drive it again for the same 5-10 mins. So, I'm thinking if it's a bad battery it would be consistent,it has to be something that heats up as I drive.