▁elect r ification ▁was ▁extended ▁to ▁Par ap ara um u ▁in ▁ 1 9 8 2 ▁and ▁to ▁Wa ik ana e ▁in ▁February ▁ 2 0 1 1 ▁to ▁co inci de ▁with ▁the ▁arrival ▁of ▁the ▁new ▁Mat ang i ▁electric ▁multiple ▁units . ▁ ▁Services ▁ ▁The ▁Met link ▁network ▁consists ▁of ▁five ▁lines ▁tot alling ▁. ▁All ▁lines ▁origin ate ▁from ▁Well ington ▁railway ▁station , ▁at ▁the ▁northern ▁end ▁of ▁the ▁Well ington ▁central ▁business ▁district . ▁Ar ound ▁ ▁of ▁the ▁network ▁is ▁elect r ified ▁at ▁ 1 6 0 0 ▁V ▁direct ▁current ▁with ▁overhead ▁lines . ▁The ▁only ▁part ▁not ▁elect r ified ▁is ▁the ▁W air ar apa ▁Line ▁beyond ▁Upper ▁H utt ; ▁as ▁a ▁result ▁W air ar apa ▁Connection ▁trains ▁are ▁dies el - h au led . ▁ ▁Until ▁ 2 0 0 1 , ▁T ran z ▁Metro ▁also ▁operated ▁the ▁Capital ▁Connection ▁service ▁between ▁Pal mer ston ▁North ▁and ▁Well ington . ▁On ▁the ▁sale ▁of ▁ 5 0 % ▁of ▁T ran z ▁Sc en ic ▁to ▁direct ors ▁of ▁the ▁West ▁Coast ▁Railway ▁( sub sequently ▁rep urch ased ▁by ▁T oll ) ▁it ▁was ▁transferred ▁to ▁T ran z ▁Sc en ic ▁( now ▁Ki wi R ail ▁Sc en ic ), ▁where ▁it ▁remains . ▁ ▁The ▁five ▁Met link ▁lines , ▁from ▁west ▁to ▁east , ▁are :- ▁ ▁Rol ling ▁stock ▁ ▁Met link ' s ▁rolling ▁stock ▁consists ▁of