This race is scheduled to have a night portion to be run with lighted cars. Joe has some LED lights available if you choose to make your own. For those who choose otherwise, here are a few websites for light kits.
Pete's Light Kits (google.com) he can custom craft your lights like adding a cockpit light -under $29 with shipping
Z Machine can be found at SlotCarCorner.com
Professor Motor has several different manufactures also.