According to Dan, yes, the real Saratoga nav lights operate that way. I quote: "Believe me, I've done a fair bit of research and asking around, and as odd as it sounds, the Nav lights on the Saratoga are, indeed, on the same knob as the instrument back-lights. What I'm NOT sure of, is whether the instrument lights are on a fader. It COULD be that it's an "all-or-nothing" switch for both back-lights and Nav-lights, but I've implemented it this way for 2 reasons: 1.- I think it's very nice to HAVE an instrument lighting fader. 2.- I reasoned that the nav lights are probably going to be consuming several times more Amps than the instrument lights. Therefore, it's most likely that the instrument lights are on a low-amp switch, and the nav lights are turned on via a relay at the end-position of the instrument lights switch. If this is incorrect, I'll have to change that for the next release." Straight from the source....