Anyone replace the "Too Hot" grain of wheat bulbs with LEDs? | O Gauge Railroading On Line Forum

rrgeorgeOGR Forum Member DIGITAL SUBSCRIBER

I have recently acquired a set of Lionel NYC Sharknose engines. These are the early Legacy engines. The A unit (6-34524) uses grain of wheat bulbs to light the marker bulbs. After running the engine yesterday for about 10 minutes I touched the nose section , and felt a lot of heat build up !! I'm afraid that if I run this engine for a long time - The heat will melt / damage the nose portion of the shell. Has anyone replaced these bulbs with leds and what did you use ? Tried to do a search, couldn't find anything. Thanks in Advance.

11/17/249:23 AM

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gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I do it all the time. For those, I believe they're 18V bulbs from track power. I use a 1K resistor and two 2835 surface mount LED's to light number boards of that shape. Since they're supplied with AC, I just wire the two LED's in opposite polarity to avoid the need for a diode for protection.

At times I've resorted to a tiny PCB to mount a surface mount LED for easier handling.

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11/17/2410:26 AM

rrgeorgeOGR Forum Member DIGITAL SUBSCRIBER

Hi John - Thank You for the quick response. One question - source for these surface mount leds ?

11/17/2411:59 AM

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I buy them in volume on places like eBay. You can look for the 2835 or the 3528 size, they're what I use.

Lifetime supply on Amazon for $6.

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11/17/2412:07 PM

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