{HEAD ~ Power takeoff} to a transmitter mounted in the housing is by {TAIL ~ conventional slip rings} 
is by
{ HEAD ~ Power takeoff } to a transmitter mounted in the housing is by { TAIL ~ conventional slip rings }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL