This Light My Bricks LEGO lighting kit contains everything you need to add lights to your LEGO 42141 set. A must-have for any LEGO motorsport fan. Light up your impressive racing model with a Light My Bricks lighting kit. It includes 15 individual LEDs, including a custom large orange LED light, so all spectators can see the race team's colors from the grandstand. The pit crew will know exactly what condition the engine is in. Thanks to the flashing red LED light and the color-changing LED light in the cockpit, which mimic the working dashboard of the real race-ready car. This set includes enough LEGO elements to build a pair of customized tail lights, as well as enough headlights to make this model the star of any motorsports fan's collection. Light my Bricks offer LEGO fans an easy way to add LED lights to their LEGO models. All components in the Light my Bricks sets are plug-and-play - no electronics knowledge is required for installation. Light my Bricks parts are small and delicate enough to fit between and under LEGO bricks. With detailed step-by-step instructions (picture-by-picture instructions with little English text), anyone can add LEDs to their existing LEGO set to make it light up. Contents: 1 x Bit light green to orange changing with 15 cm cable 8 x Bit lights blue with 30 cm cable 2 x Bit lights red with 30 cm cable 4 x Bit lights orange large with 30 cm cable 1 x Bit lights flashing red with 30 cm cable 2 x 6-port expansion card 1 x 8-port expansion card 6 x adhesive squares / corners to attach 3 x connection cable 15 cm 1 x USB power cable 30cm (power source not included) 56 x Various LEGO parts for easy assembly.