The OEM halogen bulb has just 600~800LM per bulb, but for LED, according to different model and design, it can be from 1500~6000LM per bulb.

LED bulb can last at least 20000 hours (most can last 30000 hrs), but OEM halogen has just 800 hours lifepsan.

OEM halogen bulb power is 55W per pcs, for different LED bulb designs, the power is from 12W~80W per bulb.

Normally, you can replace the LED bulb by yourself. Firstly open the back headlight cap, and take out the OEM halogen bulb, then fix the LED into the hole, connect the power supply socket and put the cap back. For some special cars, you may need some special bulb adapter, you can refer to us if you have this problem.

There are 2 things you can do. One is that change to another type of LED, which may erase the fault light. The other way is to add a pair of CANBUS canceller to solve it. Different cars may need different cancellers, please contact us when you have this problem.

You don’t have to return the bad bulbs, please just take out the bad bulbs and show us a video that the bulb is dead, then we will send you a new pair on our expense, but normally, with your next shipment.