Here are some warm tips when using these bulbs:
(1)H7 led bulbs are sensitive to polarity. If the bulb does not light after insertion, please turn the plug 180 degrees to reconnect.
(2)In order to get the perfect beam pattern, please make sure the LED chips face 3 and 9 o'clock after installation. If the original adapter prevents the LED chips from facing left and right, this bulb is not fit for your vehicle.

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