An elastic tether extends between the plug cap and the housing cap for securing {HEAD ~ the plug cap} to {TAIL ~ the housing cap} 
to
An elastic tether extends between the plug cap and the housing cap for securing { HEAD ~ the plug cap } to { TAIL ~ the housing cap }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL