I found the problem. A few inches to the left side of the power converter, I found the breakers, they are covered by a shroud. When I removed the shroud, I found the problem.
A nut on one of the breakers was completely unscrewed. I tightened that nut, and made sure that all the other nuts on the breakers were tight. Then I checked for 12 volts incoming at the main battery, problem solved, charger is now sending 12 volts to the battery.
Note: The wiring diagram only shows 3 breakers, but I have 4 breakers at this location. The wiring seems to be different as well. I think this is an indicator that these breakers were replaced in the past, and wired a little bit differently.
I updated my website to illustrate my findings. Thanks for your input....