There isn't a fuse, inside the light switch is a circuit breaker. you will find the info in the onwers manual on the page before the fuses, sorry i don't have a page number.
owners manuel
there is no breaker, u have to replace the fuse
Check the Fuse and/ or relay.
Fuse for headlights 1990 Chevrolet suburban is located on the driver's side dash on left right behind the fuse panel. It is just above the parking brake.
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where would i locate the fuse for the fuel pump on a 1995 Chevy corsica
side of the dash under a panel as you open the drivers door
where is fuse for 97 Mazda protege ? and other fuses for headlights cause they don't come on help ?
I dont think that the 1990 4Runner had daytime running lights so you would have to turn them on yourself. Otherwise the headlights each have their own fuse and a relay in the engine compartment, if these are not bad then it may be the switch.
More than likely a blown fuse.
have you try the fuse box? check for voltage on the wires going to the socket if not simply trace back your wires until you find the open source. it could also be the headlights switch.
Most all cars do not have a fuse for the headlights.