... The combination of more light output and whiter color makes for much better visibility in most night time driving ... 000 hoursNo Need to Modify. Professional Installation RecommandedBulb Sizes and Color Temperatures AvailableBulb Sizes Available:H1, H3, H4, H7, ... , 9007, 9008, 9145, 880, 881 (all 800 series available)Color Temperatures Available: 3000k, 5000k, 6000k, 8000k, 10000k, 12000k, 15000k ...