FYI It was the #1 glow plug. I changed it, and the problem was solved. The dash glow light works and it starts and runs smoothly.
I was going to replace all the glow plugs, but I didn't. I admit that I cheaped-out. The thought of fixing my car for only $15 got the best of me. I tell my Son "a job worth doing is worth doing right", and that shortcuts can come back a bite you in the butt. I didn't follow my own advice. I hope I don't get bit.