Success, sort of, Thanks to Steve’s suggestion I was able to change modes by tapping the yellow wire to ground. Could not determine the timing or sequence, I just tapped away and was able to cycle through the various modes(video attached). Point of interest, one of the modes turns the light off, had me checking my wiring until I figured it out.
That is the good news, the negative is when power is removed and then restored the light returns to the start mode, rotating rapidly.
I could not determine a timing of grounding the yellow other than it seems to be brief quick taps.
Tom