{HEAD ~ A warning device} is operatively connected to {TAIL ~ the switching device} and responds when the switching device is actuated 
is operatively connected to
{ HEAD ~ A warning device } is operatively connected to { TAIL ~ the switching device } and responds when the switching device is actuated
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH