supply of led based headlight assemblyled based headlight assembly, led based headlight assembly with oval mounting arrangement as per rd so specification no. rdso / 2017 / el / spec / 0134 ( rev. 2 ) or latest suitable for wap4 / wag7 c onventional electric locomotives. note: 1 ) bird guard to be provided on headlight glass to prevent b reakage of glass due to bird hit. 2 ) die cast aluminum body to be provided for headlight for long life and preventio n of corrosion. [ warranty period: 30 months after the date of delivery ] , led based headlight assembly with oval mounting arrangement as per rd so specification no. rdso / 2017 / el / spec / 0134 ( rev. 2 ) or latest suitable for wap4 / wag7 c onventional electric locomotives. note: 1 ) bird guard to be provided on headlight glass to prevent b reakage of glass due to bird hit. 2 ) die cast aluminum body to be provided for headlight for long life and preventio n of corrosion. [ warranty period: 30 months after the date of delivery ] , led based headlight assembly with oval mounting arrangement as per rd so specification no. rdso / 2017 / el / spec / 0134 ( rev. 2 ) or latest suitable for wap4 / wag7 c onventional electric locomotives. note: 1 ) bird guard to be provided on headlight glass to prevent b reakage of glass due to bird hit. 2 ) die cast aluminum body to be provided for headlight for long life and preventio n of corrosion. [ warranty period: 30 months after the date of delivery ]