Using these Noble Lux RGB headlights is a breeze. First, check if your vehicle is a 2015 - 2021 Subaru WRX Base or Premium model, or a 2015 - 2017 Subaru STI. If your car has SRH functionality, you'll need the OLM SRH conversion kit OLMA.70031.3 and some wiring work. For installation, all the necessary wiring is included, and the process is simple. Just follow the instructions carefully. When it comes to the 2018+ WRX, remember to unhook the headlight resistor pack under the passenger - side headlight for the high - beam to work properly. You can control the RGB DRL functions through the app available on the Apple Store and Google Play Store. For maintenance, keep the headlights clean with a soft cloth and avoid using harsh chemicals. If you notice any issues, check the wiring connections first. And always remember, these headlights won't work on cars with SRH without modifications.