Only one side of kit works.

If the kit is installed and one or both sides do not appear to work, it could be something simple.

  • Check the fuse!

  • Check the polarity (+ve / -ve points) and switch terminals.

  • Transfer the ballast from the side where the bulb is working to the side that is not working -  if the bulb on the non working side now works this points to a faulty ballast.