Reply to "Atlas O Amtrak Dash 8 Blunami 4408 upgrade"

MichaelBOGR Forum Member

I have identified the problem with the green class lights getting brighter when the rear lights are switched off. I had both the green and red LEDs running off a single 1K ohm resistor, for the front and rear lights. I changed the setup so the green and red LEDs get their own 1K resistor.

Only issue now is the green class lights are much brighter than the red lights, but that will be fixed with a higher value resistor for the green LEDs. Looks like an extra 10K ohms in series for the green LEDs will dim them down to a much more reasonable level.

I am glad I caught this earlier as I think I would have ended up melting something, since some of the resistors were getting hotter than the rest.

11/26/2410:02 PM

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