Hyluxtek 2A88 Canbus 35w Ballast
This blue wire is used with the canbus module that has not been updated to work with more and newer vehicles that require stronger canbus solution. If you disconnect your factory headlight bulb in your vehicle and it gives you an error message in your vehicle dash, then you need this ballast with the built-in canbus solution.
We have tried and tried for 15 years to find a better ballast and nothing comes close to the life of this ballast, the price and the tried and true function that it will always working. no flickering, no gimmicks, not hard to install harnesses. It just works!