In some countries, it is still obligatory
for cars parked in the road at night to
have their parking lights on. If the car
is parked well before dark, there is an
unnecessary drain on the battery. This
may be obviated, however, by the present
circuit, which ensures that the
parking lights do not come on until It
gets dark, and are switched off again
when it gets light. It has integral delays
to prevent the parking lights being
switched off by the headlights of passing
traffic. The circuit can be enabled
only when the ignition is switched off
and the parking lights are switched on.
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