Automobiles are quickly adapting LEDs to create a colorful in-cabin environment. This application shows how the automotive grade IS32FL3738 matrix driver can be interfaced with a LIN microcontroller to enable control of up to 16 RGB LEDs from a single LIN node. These 16 RGB LEDs can be used for backlighting the instrument cluster icons or add a colorful accent to a control panel. The LIN bus (Local Interconnect Network) is a single wire serial network used for communication and control between components in vehicles. LIN RGB drivers are available in the market, however they can only drive a single RGB LED, which is not practical nor cost effective when many RGB LEDs are required. Interfacing the IS32FL3738 to a LIN microcontroller offers a cost-effective multi-RGB solution for automotive applications. The automotive market has strict requirements for electronic components; they must adhere to AEC-Q100, an industry standard defined by the Automotive Electronics Council. Fortunately Lumissil has a growing family of LED drivers which meet this requirement.