- Published in issue 9/1990 on page 32
Automatic headlight switch
This circuit automatically switches on the headlights of a ear after the engine is started. In countries like Sweden and Canada, ear drivers must have their day-running lights on, even in broad daylight. Aeeordingly, ears manufactured or imported into these countries often have an automatie lights-on control which, although it can not be disabled, leaves the normal light switch in function. A similar circuit with automatie switch-on, switch-off and reduced light intensity is described here.