Motor 16 is connected by {HEAD ~ suitable leads} to batteries 20 which provide {TAIL ~ the required electrical power} for operating the motor 
Motor 16 is connected by { HEAD ~ suitable leads } to batteries 20 which provide { TAIL ~ the required electrical power } for operating the motor
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH