The illumination assembly includes {TAIL ~ a lighting fixture} and a down feed tube for shielding {HEAD ~ the electrical feed wires} 
The illumination assembly includes { TAIL ~ a lighting fixture } and a down feed tube for shielding { HEAD ~ the electrical feed wires }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD