supply installation testing & commissioning of twin beam led based head light as per rdso specification no. rdso/2017/el/spec/0134 rev (1) along with led based auxiliary head light cum tail light red module and of led based auxiliary head light cum tail light amber module as per rdso spec. no. rdso/pe/ spec/emu/0063-2004 and led based head light generally confirming to rdso specification no rdso/2017/el/spec/0134 rev.(1).