Hey guys, so i recently bought some xenon headlights for my facelift e46. They came off an E46 wagon. I was about to replace them but then i realised, these xenon lights have an extra plug on the ballist. These have a total of 5 plugs. The xenon bulb, the high beam, the small bulb, the light positioning plug( to move the beam up or down) and then there is an extra plug on that goes into the ballist ( the small grey plug) shown in the pic. I have tried plugging the lights and they do work but could someone help me as i dont want to leave it unplugged and wanna know what its for. Also should i take the wiring out from that wagon or can i just get the plug from that and wire into my existing car witing. Thanks alot for you help!