I don't have an Atlas engine with a Mars light - but I just bought a Mars light board and LED from Dallee to install in one of my FP-7s (in S gauge). These single LED systems are set up to mimic a Mars light as seen when standing in front of the train (at least up to the point of impact...
) -- that is, you will see a variation in light from full intensity to lower intensity (as opposed to a 'blink', which is presumably on-off-on-off, etc.) to simulate the horizontal swing of the light from side to side. I'm guessing that is the way the Atlas light is set up.
Ngineering makes a similar, one LED device; they also have a three-LED headlight that actually mimics the side-to-side light swing by sequentially lighting the LEDs, which are mounted side-by-side-by-side horizontally.
- Rich
