On some sensitive vehicles, where the ULTRA or Sportline LEDs are not accepted by the vehicle's computer system, and even the Smartbox will not fix the issue, LUMENS HPL offers harness & resistors solutions that will fix the issue. Here you will find installation instructions, guides, and other usefull information when installing ULTRA or Sportline LEDs. If you should have additional questions or concerns that is not covered in this area, please email us.

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