H1 hid bulb - Good/Better/Best grade ... ) if you need. Bulb features: Bulb model:H1,H3,H4-1,H4-2,H4-3,H7,H8 ... our network of fitters. Please note: This is a chargeable service, please contact us for more information ... Analog ballast is controled by the circuit of a capacitor & a resistor.(Older Technology), but the Digital Ballast ... business better. HID Xenon Lamps & Bulbs,H1 hid bulb, 6000k 8000k 4300k