Parallel
Parallel. Simple.
They are wired in parallel, series and series - parallel.
If they were wired in series, losing one bulb would leave you with no headlights at all, and that would be dangerous.
In parallel.
the paralel
In a parallel circuit, the other bulb still works when one fails.
series
A parallel circuit
2 batteries are wired in series then these 2 are wired in parallel with the other 2 which should also be wired in series. series is positive to negative and or negative to positive. parallel is pos. to pos. and neg. to neg.
No, series circuits are not used in car headlights, because if one headlight were to go out the other would also, because the one light would make an incomplete circuit. Headlights are wired as parallel circuits because when one headlight goes out, the other is unaffected and stays as bright as it was before the other light went out.
it would be kind of both