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I'm working on a 6-18378 Subway set converting to LEDs. It's not going well. I've installed the LED positive side near the square end of the circle (see photo) but they keep shorting out. Any ideas? I've tried about 6 LEDs and the same thing happens. Can I wire the resistor (330 ohm) like I have it? 

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Last edited by Trainlover9943
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totrainyard posted:

The resistor was likely shorted out, I would have used a ohm meter to check the resistor before apply power.

Without the resistor in series with led, the led will quickly short out.

The second method was much safer, but I would add shrink wrap tubing to the exposed bare wiring, to prevent shorts.

Probably was. My attempt to make the installation a little neater (resistor on bottom) didn't quite work. I'll add a little tubing. 

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