Throttle Up is still in business and may still have that circuit available. Check their web site:
http://www.soundtraxx.com
I am hunting for 1-3 of the older Non DCC or Pre-DCC era headlight/beacon circuits, Throttle UP, Emerx electronics both made a headlight circuit with the Prime digital squential beacon effect for use on an analog layout. I am sure there are some of these still out thier in guys junk drawers as most have switched over the DCC making the old circuit surplus. If someone has one or comes accross one in a shop somewhere please let me know. I know Richmond controls makes a stand alone circuit still, but its LED based and my 3 brass engines already have the DW beacon castings installed that are cored for the 1.5vt micro bulbs, so I need the older systems. I have no interest in putting DCC on my small layout, I do just fine with my MRC throttles and block system. Thanks Mike and Michele T
Silly NT's, I have Asperger's Syndrome