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H13/9008 Bi-xenon HID Conversion Kit: Low Beam Works but High Beam Does Not or Vice Versa


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Hello Fellow OPT7-ites,

Report: Upon installation of a Bi-xenon HID conversion kit that includes H13/908 bulbs the low beams work but the high beams do not or the high beams work but the low beams do not...

First, ensure that the appropriate Bi-xenon high beam control wire was received and installed. The control wire is directly responsible for the high beam setting functionality.
bi-xenon control wire

The default H13/9008 male power harness configuration is as follows:
h13 polarity

Explanation: The live (Low or High) wires do not require a ground to function correctly.  So, if the low beam and ground or high beam and ground wires are swapped then the corresponding setting will not function. 

Solution: If the low beams are not working then remove the low and ground wires from the power harness. Swap the positions, re-insert and secure the terminal then re-test the setting for functionality. If the high beams are not working, then remove the high beam and ground terminals from the power harness, swap the positions, re-insert, secure and re-test the setting for functionality.

h13 pin removal


Until Next Time,
The OPT7 Customer Experience Team