wherein the power supply circuit and the motor are arranged in {HEAD ~ a space} surrounded by {TAIL ~ the outer package member}, the mirror box and the first surface of the chassis 
surrounded by
wherein the power supply circuit and the motor are arranged in { HEAD ~ a space } surrounded by { TAIL ~ the outer package member } , the mirror box and the first surface of the chassis
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH