So I ended up getting two old T247 units and install went smoothy and everything worked! I was so confident after finishing that I decided to give the new lights another go. Turns out they did change the order of the ground, 12v, and pwm so once that was figured out, all went well. The other two went through without a hitch.
Now a new problem.. I have 3 lights on my display and 4 lights set up for control via PWM (i.e. BlueFish). 3 of those lights are the new lights and 1 is the older light.
When I was doing the work, I left the old light in and pulled a new light out to do the install. That repeated until I replaced the old unit with one of the new ones post install. Every time I replaced a new light, I validated the manual adjustments worked on all lights and that the thunderstorm worked.
When I replaced the old light with the newer light (i.e. 3 newer fixtures now) the lights stayed on full 100%. I pulled one out and plugged in the old light, everything worked (for all lights). I did this replacing all the new lights one by one with the old light and everything worked.. Removed the old light so that only the three new ones were connected, Nothing worked!?!
So, the old light got new LED diodes and it is working last night and all is working.. But if this fixture ever dies, I'm going to be stuck switching it all back to factory... Any ideas??