I purchased the v.4 lockpick and installed it yesterday. In the instructions, it says to unplug the factory white plug from the back of the radio and put the lockpick white plugs between the radio and the factory plug. Mine doesn't have a white plug attached to the radio, only the gray one. Can anyone tell me what the white one controls and if its normal not to be there from the factory? I just left the white one unplugged, as is, and everything I wanted the lockpick to do works great. The nav input works and dvds play while moving. Im at a loss as to what else is controlled in the wiring of the white plug. Thanks in advance!