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First measure whether there's enough room behind your headlight: the XTR LED needs at least 36 mm, for H4, H13 and HB5 38 mm. After that it's about half an hour's work. Read the step-by-step guide.

Bulb not working, LEDs flashing or a poor beam pattern? These steps will usually help you find the cause yourself. Go to the troubleshooter.

LED lasts longer and is at full brightness instantly, ideal for high beam. Xenon gives slightly more light and always fits, even when there's little room behind the headlight. Read the full answer.

Yes. If you have a good beam pattern with your standard bulb now, you'll have it with a Hilox xenon or LED kit too, just with more light. The focal point of our bulbs matches that of the original bulb exactly. Read the full answer.

No. A Hilox LED never gets hotter than a halogen bulb: the LED uses 30 W, a halogen bulb 55 W. Read the full answer.

Compare lighting on lumens, not watts. Watts is power consumption, lumens is the amount of light. Read the full answer.

Bulbs with an H or T designation cannot get ECE approval and so may not be used on public roads, only on private land or a circuit. The E-mark on our XTR LEDs covers the electronics, not use on the road. Read the full answer.

Measure your dog's neck, or the collar they wear now, and allow 2 to 3 fingers of room. Then choose the collar whose min-max size contains that circumference. More explanation and all LED dog collars.

Fully drain and fully recharge a new battery at least 5 times within the first 2 weeks. Never store it empty, and recharge it every now and then, even when you're not using it for a while. Read the full answer.

You get your invoice automatically by email as soon as your order is completed. If you have an account, you can download it under your orders. Read the full answer.