▁the ▁Occ up ation ▁Forces ▁for ▁their ▁je eps . ▁In ▁ 1 9 6 1 , ▁for ▁the ▁first ▁time , ▁the ▁company ▁supplied ▁w iring ▁har ness es ▁for ▁four - w heel - drive ▁vehicles . ▁At ▁present , ▁Sum it omo ▁Electric ▁prom otes ▁the ▁autom ot ive ▁w iring ▁har ness ▁business ▁in ▁a ▁tri part ite ▁system , ▁in ▁which ▁Sum it omo ▁Electric ▁takes ▁charge ▁of ▁sales ▁and ▁business ▁planning , ▁Sum it omo ▁W iring ▁Systems ▁handles ▁design ▁and ▁manufact uring , ▁and ▁Auto Network s ▁Techn ologies ▁conduct ▁research ▁and ▁development . ▁As ▁a ▁result , ▁Sum it omo ▁Electric ' s ▁elect rical ▁w iring ▁har ness ▁systems , ▁which ▁are ▁used ▁to ▁send ▁information ▁and ▁energy ▁to ▁autom ob iles , ▁have ▁gar ner ed ▁the ▁second ▁largest ▁market ▁share ▁in ▁the ▁world . ▁ ▁Info communic ations ▁This ▁segment ▁provides ▁key ▁products ▁and ▁devices ▁that ▁support ▁optical ▁communic ations , ▁such ▁as ▁optical ▁fib ers , ▁c ables , ▁connect ors , ▁fusion ▁sp lic ers , ▁G E - P ON ▁( G ig ab it ▁E ther net ▁Pass ive ▁Opt ical ▁Network ) ▁devices , ▁various ▁network ▁access ▁equipment , ▁as ▁well ▁as ▁electronic ▁devices ▁and ▁anten na ▁products ▁for ▁wireless ▁communic ations . ▁The ▁division ▁also ▁provides ▁various ▁products ▁for ▁supporting ▁the ▁Information ▁and ▁Communic ation ▁Technology ▁( I CT ) ▁society ▁such ▁as ▁traffic ▁control ▁systems ▁and ▁other ▁intellig ent ▁transport ation ▁system ▁( IT S