Want lights for Fischertechnik with little power consumption?
Print these and assemble them with an LED and a resistor.
You will need an LED and a resistor suitable for 9V. For the plugs, I use core end sleeves ("AderendhÃ¼lsen") which I squeeze a bit so they will stay in place.
There is only little room in the small compartment, so be careful to solder the sleeves, the resistor and the LED together. Have a look at the pictures.
Use hot glue and optionally a bit of acetone to glue the case together.
It is recommended to verify everything is fine before you glue the pieces together.