I never did figure this one out.
Yikes. So you did get the cruise control issue.I run Diode Dynamics LEDs on the front and rear exterior lights and the LED flasher. Mine were lit up on the actual HUD. The LED flasher did not fix the issue. I actually had to install a load resistor on each corner light which fixed that as well as my cruise control as I have diode dynamics LED's in the third brake light location.
I feel lucky not to have had this issue. LOLThe only thing that I have right now that is funky is that the LED below the PRND321 location blinks when I have the turn signal activated during the day. Once I turn the lights on at night that issue goes away. So there is feedback coming from somewhere.