This circuit was found in a 1965 General Electric manual. What it does is give a warning if you leave the vehicle with the headlights on or lights inside.
This configuration, widely used in our articles and on this website, uses a 555 to control a relay...
We found this circuit in an American publication from the 70s. The circuit has only the integrated...
The XR2206 is not a common component today, but if you have one you can build this function...