Firstly, make sure you ordered the right bulbs, you can check your vehicle handbook or search “Automotive Bulb Lookup” online to find out your bulb size. The most reliable way is to take out your original bulbs and find the size information on the base of the bulb.
Some vehicles take separate bulbs for low beam and high beam, the bulb sizes are usually different. Our bulbs may fit either your low beam or high beam, so please make sure you install our bulbs in the right position.
Doesn’t Turn On
Make sure the power connectors are properly connected, some bulbs(H11, 9005, 9006, 9012) are polarity specific and need to be installed in a certain way. simply rotate the connector which plugs to your vehicle's factory harness by 180 degrees.
If only one of the bulbs doesn’t work, swap the left and right side bulbs then test again.
Sometimes it may caused by your vehicle’s CAN bus system, you need to install extra CAN bus decoder to solve the issue. If possible, you can test the non-working bulb on a separate 12v battery or other vehicles to determine the issue.
Flicker or Flash
Make sure the power connection is normal and stable.
CAN-bus is a Controller Area Network Bus that allows the vehicle’s devices to communicate with each other. LED bulbs draw far less power than stock factory bulbs. The vehicle’s CAN bus system detects the low power draw and determines that the LED bulb is faulty or doesn’t recognize the bulb at all – resulting in the error or flickering.
This issue is common on Dodge, Ram, Ford, Jeep, Chrysler, Mini, Volvo, Lexus, GMC, Audi, BMW, Mercedes, Volkswagen, Chevy and etc. You need to install extra CAN bus decoder to resolve the issue.
LED bulbs draw far less power than stock factory bulbs. The vehicle’s CAN-bus system detects the low power draw and determines that the LED bulb is faulty or doesn’t recognize the bulb at all - resulting in the error or code message. Load Resistors/CAN bus decoders should be installed to increase the power draw resembling that of the factory bulbs to resolve the issue.
Bulbs Stop Working
Firstly check the power connectors in case of loose connection, you can try to unplug and re-plug the connectors.
Take the non-working bulb out for a while and install on another side to test again.
Sometimes it may caused by your vehicle’s CAN bus system, you need to install extra CAN bus decoder to resolve the issue. If possible, you can test the non-working bulb on a separate 12v battery or other vehicles to determine the issue.
If one of the bulbs has poor beam or light, swap the left and right side bulbs then test again. With ages, your headlight covers/lens may get cloudy which needs to be restored.
Adjust the beam. For H11, 9005, 9006, and 9012 bulbs, you can use the included small Allen wrench to adjust the locking ring of the LED bulb to achieve the best beam pattern; For 9007, 9008, H4, and 9004 bulbs, the locking ring is rotatable, you can just rotate the bulb body to adjust the beam once installed.
For most vehicles, we suggest keeping the LED chips face at 3 o'clock and 9 o'clock direction when locked into place. However, the orientation may differ for some vehicles. As long as the beam pattern is good, then don't worry about the recommended orientation.