I got my bro to replace a snapped hand-brake cable and a missing wheel arche cover on my 172ff phase2 last week. Since he did this one of the motors/units which automatically controls/adjusts the head light has gone nuts. If i turn the egnition key i hear both head-light motors run through a cycle, the driver side motor stops after a couple of seconds but the passenger side keeps going and going. Sounds like it's trying to adjust/align itself and then repeats. I've had to disconnect the cable for the time being. Any thoughts or suggestions?