A modular electrical component includes a mating keying arrangement complimentary to the keying arrangement in the channel, and thereby only allows {HEAD ~ the modular electrical component} to be insertable into the channel and coupled with {TAIL ~ a corresponding electrical terminal array} in a preselected orientation 
A modular electrical component includes a mating keying arrangement complimentary to the keying arrangement in the channel , and thereby only allows { HEAD ~ the modular electrical component } to be insertable into the channel and coupled with { TAIL ~ a corresponding electrical terminal array } in a preselected orientation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH