Plain 12 V leds I used the exterior type that comes on a spool I cut pcs. 6" long and soldiered them together ....I used phone cord to connect the lights together....I used 3/8 soft copper for the light poles....The race track surface is 2' wide....
Those are way cool and look simple to assemble!! Looks to be plenty of lighting!! The vid in your other thread was pretty cool also!! Where does one obtain that LED stripping??