I'm not sure if it was Lego, but I remember some special 2x2 bricks that could light up. They were attached to a powersource that could also be built on.

Does anybody remember these, or is it just my imagination?

I'm not sure if it was Lego, but I remember some special 2x2 bricks that could light up. They were attached to a powersource that could also be built on.

Does anybody remember these, or is it just my imagination?

I think there is a 2x4 light brick.

There have been quite a few 2x2 light up bricks-

Bricklink

Bricklink2

Bricklink3

Bricklink4

I think TLG has changed completely to 2x3 bricks now with light bricks

2x3 bricks? They still make them? Do you know the bricklink link for the newer ones?

This is what you're looking for.

Fugazi linked to one of the two available 2x3 Light Bricks -- the 54930c02 "Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Clear Top and Yellow LED Light" ( http://www.bricklink.com/catalogItem.asp?P=54930c02 ):

There's another similar one too -- the 54930c01 "Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Red Top and Red LED Light" (

http://www.bricklink.com/catalogItem.asp?P=54930c01 ):

If these are still not what you are thinking about, check the two pages of "Electric Light and Sound" light brick parts on Bricklink: http://www.bricklink.com/catalogList.asp?catType=P&catString=123 .

The 2x2 light bricks were from the early train sets usually. yellow ones were 4.5 volt and the others were for the 12v sets.