Not sure what bulb socket (type) is in your vehicle? Use the Philips bulb guide to find out. If you have a Dodge RAM truck you can use our GUIDE to select the right kit. If installing LEDs in a JEEP, Dodge truck, van, you will need to install anti-flicker modules for LED kits to work properly without flickering. SUPER DECODERS are just a second generation of ANTI-FLICKER MODULES designed for 2015+ Dodge RAM trucks. Additionally - KIA Optima and 2015 Ford trucks also need to have super-decoders installed to prevent headlights from shutting off.