Hint E2 - Egg-Box electrical connections
Motors, lights and other electrical output devices can be connected to the Egg-Box via 4mm jack plugs.
A simple on/off device such as a light should be connected with one wire in the red hole and the other wire in the corresponding black hole (see photo).
A motor which requires both forward and backward motion should be connected across two adjacent red plugs.
This means a maximum of two motors with forward/backward motion can be controlled by Egg-Box (see photo).