OK, here's the latest. The glow plugs are working. The gorilla switch is working. Yay. I am a bit confused though. I have been told by the dealer that the switch on the console is for the glow plugs, too. It does not light them up. No problem. I will just fire up off of the gorilla switch for now until I get the MB CD service repair manual to further study.

Thanks for all of your help!

Rick