This Light My Bricks LEGO lighting kit includes everything you need to illuminate your LEGO 21045 set. Light up your LEGO Trafalgar Square 21045 set with 16 individual LEDs, including the large blue Light My Bricks Bit Lights to illuminate the world-famous twin fountains. This set is a must-have for any architecture and history enthusiast and a fantastic addition to any office display. Light My Bricks offers LEGO fans an easy way to enhance their LEGO models with LED lights. All components in the Light My Bricks sets are plug-and-play compatible - no electronics knowledge is required for installation. Light My Bricks parts are small and delicate enough to fit between and under the LEGO bricks. With a detailed step-by-step guide (picture-by-picture instructions with minimal English text), anyone can upgrade their existing LEGO set with LEDs and make it shine. Contents: 4 x white Bit Lights with 30 cm cable, 4 x white Bit Lights with 15 cm cable, 2 x blue Bit Lights with 30 cm cable, 3 x adhesive strips with white LEDs, 1 x 6-port expansion board, 1 x 8-port expansion board, 2 x 5 cm connection cables, 2 x 15 cm connection cables, 1 x 30 cm USB power cable (power source not included). Important information: All LEGO sets shown in images and videos are sold separately. LEGO is a trademark of the LEGO Group. The use of LEGO trademarks is solely for the purpose of identifying the LEGO products to which the Light My Bricks products are compatible and is not intended to infringe on any rights.