As shown in the pamphlet provided, unscrew the heat sink before fitting, watch out for the little washer in between the bulb and heat sink. Disconnect the LED driver wire from the bulb wire also, feed the wire connected to the bulb through the bulb retaining clip on the car, this will make it easier to clip the bulb in place. Before screwing the heat sink back on, clip the wire that holds the LED driver back on to the bulb wire, then squeeze this into the bottom of the bulb housing so it was hidden away, now screw the heat sink back on. The cover can be a bit fiddly to get back on as the retaining clips really tight but persevere and it'll fit back on.

What an exceptional product AND service from the guys at Horizon LED. Set your expectations high for this product and prepare for them to be blown away. Fitted to my 2009 BMW E90 LCI 320D MSport (read below to see how I did it). These are EXACTLY what I had been looking for. The price tag may seem high for some but close your eyes and just do it, you will NOT be disappointed, and you'll never close your eyes again for the sheer crisp brightness of the lights. So easy to fit, literally plug and play. The below may seem much but trust me when you're doing it, it'll be easier and when it's done, you'll be smiling ear to ear.

I brought these to replace a 'premium' HID kit that had started playing up & they are brilliant. Actually brighter than the HIDs & a much nicer colour IMO, well worth the money. Although the heatsinks are bulky they fit pertectly in Porsche 987 headlights

Arrived promptly in excellent packaging, safe and secure if a little gimmicky. Installed on a X5 E53 in none original lamps as main beam. Lamp unit fitted the lamp perfectly and allowed installation of the heat sink and driver within the unit with ease. Good light - way better than the standard H7 lamps available. Haven't used them in anger yet but other than a bit of flashing when starting as the canbus system checks them they have brought no errors. Thanks.

I have received these lights and I am really impressed with the packaging to start with! Great to be able to have the adjustment if required however when I installed them into a Ford Fiesta the beam pattern was already perfect and they fitted so easily! Would definitely recommend these