Light My Bricks - Lighting set suitable for LEGO Ambulance 4431
Amazon.com: LEGO City Emergency Ambulance (7890) : Toys & Games
Amazon.com: LEGO City Hospital Building Set 60330 with Toy Ambulance, Rescue Helicopter and 12 Mini Figures, Pretend Play Toy Hospital for Educational Fun, Connect to Other City Sets, for Kids Age 7+ :