Sonar HID's with self leveling working?

[Moose]

First question from a newbe here...
So I now have all the lights working on this 2000 528i that i picked up last week. It has aftermarket lights front and rear.
After getting the brakes lights and everything figured out and working (long story), I was admiring the "Sonar Brand" aftermarket HID's while checking the engine bay for leaks, bad wires and such. I noticed a plug that was not inserted into the headlamp assembly. So I plugged it in, started the car, and flipped the headlights on to see what happened.
The projectors moved down a bit, up a bit, then stopped somewhere in the middle. I guess since the car originally came with the Xeon headlamps, it has the self leveling sensors on the suspension, the aftermarket Sonar's must have a motor in each of the projector housings.

My question is, I know i need to adjust them now with a phillips driver because they are a bit high, but after doing so, how do I know if the "level" function is working properly or not?

I have to wonder if the previous owner disconnected this plug because of a bad sensor. I do know the person I bought the car from may have unplugged all sorts of crap when they replaced the fan, cowl, and water pump. Gut feeling is they missed the extra plugs at the top upon re installation.

Any ideas on how to check?
They look very sweet by the way, and after plugging the level sensor in they seem to have a better beam. To high, but better, if that makes any sense. I would love to use this feature, but don't want to blind an oncoming Chevy...

Thanks