Atlas RS3 

A4X Decoder installation

Photos and text by Les Cattin of Vintage Hobbies in Kokomo, Indiana  

 I used an A4X for the installation.  The old Atlas setup had the single light bulb in the center of the board.  Most people cut and polish the light tubes to the length that is needed, but what I did was use two small incandescent bulbs side by side in the same spot in the center of the board. I  made a "T" out of electrical tape between the 2 bulbs which mostly isolated the light from the front bulb from brightly lighting the rear light pipe. I assembled the loco, and the light in the direction of travel, of course, is on.  You can see it both front and rear but the opposite light tube isnít getting as much light so it is automatically dimmed.  What you end up with is a very nice dim glow in the opposite light.  It works great. I am also going to dissemble the trucks and solder the pickup wires to the wipers.  The original Atlas design used a push on cap to attach the wires. 


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