How-to for dummies..? Also, there are no LEDs on these. Don't know the English word for it, but it would translate to "glimmer lamp bulb" from Swedish "glimlampa" (I barely remember the exact word for these. Not used nowadays as widely as they used to be). These "lamps" would be cheaper to use since it doesn't require addtional components, as opposed to several components like resistors, capacitors, diodes depending on the design and also regulations for the intended country, and finally an LED.