Diode Dynamics DD3047 Lighting Control ModuleCustom Appearance. This kit will convert the LED tail light on your 2017 2018 Subaru Forester to also function as the turn signal. This kit will instantly customize your vehicle for a much more modern appearance on the road! Additional Backup Lights. Also available with the kit, you can convert the old turn signal socket to an extra backup light. With double the number of backup lights, you will add much more visibility when reversing at night. Each