Mars Light circuits

I am looking for a decent mars light circuit for my old athearn NKP PA diesel. I dont plan on adding sound or dcc. I have seen circuitrons old ML-1 duel filiment circuit, very poor effect. I know richmond controls are nice, but he has a large backlog right now. Circuitron makes a second mars circuit the ML-2 but I have never seen how it works. I havent seen any of the old Ibenlite circuits in a long time, but those were real nice. Any suggestions, any circuits I can build with stuff from Radio Shack? Must be able to run off of track power. Thanks Mike

You might try Miniatronics.com they have a nice Mars light and all kinds of other quality lighting i saw their Mars light in action at my LHS layout and it looked nice to me ,realistic effect hope this helps they cost 34.95 but comes with all wiring and circuitboard.