This is basically how my ceiling lights in the van switch on/off:
The above is unmodified. Below are the mods I want:
- Adding a third lamp. (done).
- Switching on the accessory sockets in the loading bay when one of the loading bay doors are open, by attaching a wire to the circuit above, (between the lamps and the switches) to use as the signal to the loading bay’s accessory sockets. More detail coming…