Jim, by starting the coach from the rear we eliminate 100% of everything except the absolute basics. If it won't click or make a noise using the rear start, chasing anywhere else except the things I have outlined will not do anything to isolate the problem.

I listed the drawing numbers if you wish to follow why I have taken that position, and if you follow the circuits and they are OK, at the very least the starter will engage, something that is not happening according to my understanding.