BrickLink - Part 54930c01 : LEGO Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Red Top and Red LED Light [Electric, Light & Sound] - BrickLink Reference Catalog
Bricks and Lights 11009 | Classic | Buy online at the Official LEGO® Shop US
BrickLink - Set 816-1 : LEGO Lighting Bricks, 4.5V [Universal Building Set:Supplemental] - BrickLink Reference Catalog