Athearn Genesis 1.5 volt bulb replacement with LED.

[RR_Mel]

The white wire from the decoder will have enough voltage to operate an LED with a 1K resistor in series.

 

 

Mel

 

 

Modeling the SP in HO scale since 1951

 

My Model Railroad   

http://melvineperry.blogspot.com/

 

Bakersfield, California

[woodone]

you can use the red track power wire to power your LED, but you must use a resistor. I would use a 1K resistor from the right rail ( red wire) to the positive side of the LED. Then the white- yellow? wire for the grounding .

[farrellaa]

I know this subject comes up often but I have not been able to find a solution to my problem. Did search on this forum and Googled it. I have an older Genesis F3?7 with the MRC sound decoder. The SMD I installed to replace the 1.5 v incandescent bulb requires at least 3 volts so it barely glows. How do I connect the LED with or without resistor to the decoder? The current headlight connection is with a plug in at the end of the board. Is there a resistor built into the pc board that can be bypassed or am I stuck with using the 1.5 v incandescents?

   -Bob