Originally Posted by ffemtroberts
My cargo LEDs do the same thing, stay on very dim. I would like to know what size resistor as well, but being an electrically inclined individual, I have lots of resistors just lying around, do I'll do some trial and error and see what I come up with. I'll report back here with my findings for everyone.
Update: 100 ohm 1watt resistor, one side to one wire, other side to the other wire, in other words, wired in parallel to the bulb
that's not good that they did not place resistors in the setup. You also need a Diode on the other wire to prevent reverse voltage. the LED will Burn out fast if too much reverse voltage hits them. I do this on my Model railroad lights as people told me to do.