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I have an older Atlas Dash 8 I am upgrading from TAS Saw board to ERR. I found it came with what appears to be 18 volt incandescent lamps. When powered by the R2LC for directional lighting the lights the glow orange. As this is a budget job for a friend I have no intention of replacing with LEDs. 

I can wire them to track voltage to get full brightness but then loose directional lighting. Do the prototypes run with lights on front and back or are they directional. This is lettered for Santa Fe if that makes any difference in prototype practice.

Pete

Last edited by Norton
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I have never seen an incandescent lamp glow orange.  IF it had SAW in it the bulbs are powered by the R2LC, so there should be no change?  I would assume they are directional, why wouldn't they be in TMCC environment.   What I do know is the all the Older Atlas I have seen used LED (orange) that show as white. Usually with directional markers too.  But my sample size is small.  G

A couple of my Atlas engine have those orange glow bulbs too, the older ones with EOB.

Head lights should only be on in the direction of movement. I usually turn the switch off for middle or trailing units, or unhook them if there's no switch. Even on the rear of the lead unit, they should be dark... unless of course it's a light engine move.

Thanks guys, I assume the lights were driven from the R2LC on the SAW board too. No telling now as the board was toast. I will probably do the same.

G, just take any incandescent bulb and apply half its rated voltage and notice the color change.

BTW this engine has LED ditch lights but incandescent head/rear light. Pretty sure they were not swapped out at some time. 

Pete

Last edited by Norton

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