In this arrangement, {HEAD ~ the electrical connectors} pass through {TAIL ~ a sidewall portion} of the tubular body 
In this arrangement , { HEAD ~ the electrical connectors } pass through { TAIL ~ a sidewall portion } of the tubular body
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH