My buttons still work great, even when turning the headlights on and off, as I said earlier in the thread. I am convinced that those who are having problems with the button illumination are those whose cars use PWM on their dimmer wires.

Is there any way for Hijack to piggyback off of the player's existing dimmer sensing code? Instead of Hijack trying to detect the state of the dimmer line itself, and do its "own thing", perhaps instead, it could try to detect what the player software is doing with the dimness of the display VFD and just follow its lead?

THEN AGAIN... with Rob now having backlit buttons of his own, perhaps support for backlit buttons will appear in the default software and we won't need to worry about putting it in Hijack any more.