Hello,

Try giving "Dreamworks Model Products " [link=http://www.dreamworksrc.com]Dreamworks Model Products[/link] they have differant Kits and light Dia.
Also check with " [link=http://www.RAMRCandRAMTrack.com]RAM R/C LIGHTS[/link] , they have several simple E-switches / kits for NAV. lights

Or last resort,,, Build your own From a electronics store / suppy house , Radio Shack Eg..............

Hope this helps,
Mark K.