I think so, yeah. You can make 'em do whatever you want. Sorry I don't have the syntax handy.

Just keep in mind that the guy who said it was backwards was, in fact, backwards himself. The point was that the buttons are supposed to match what the empeg display dimmer is doing. i.e., headlights on means it's night time, so the display should be dimmer so as not to be blinding in the car cabin. During the daylight you want the stuff brighter.

But they aren't supposed to turn off completely when you turn on the headlight. Just go to about half brightness. If they turn off completely there might be something funky with the circuit. Try setting their brightness level in hijack and see if you get the full range of brightness.