Why have my headlights stopped working? i changed light bulbs and checked fuses..there is power goin to the lihght bulb wires but the lights do not turn on

Blown fuse ,bad headlight switch,or wiring issue.
the tail lights have there own fuse and are powered through headlight switch. Do the front running lights come on? If none of them work, switch could be bad if front work and rears dont, check bulbs and power to them when lights are on

You didn't forget to pull the headlight switch to check them? That's odd, usually license plate lights are spliced in from the tail light circuit.
There may be a separate ground for the license lights-if so, should be right nearby the bulbs. Use a test light or voltmeter and make sure fuse 22 has power. You could also check the sockets for power. If you have power to the socket and new bulbs don't work, it would be a grounding problem.

check the fuses

You may have blown a fuse, check fuses first then before you try to replace the bulb again check for broken wires or the correct bulb

First check tail light fuse and the parking light relay

open wire to the right section of truck or maybe a rock or blown tire hit a wire check conccistence if power on bulb ends check bad ground ,open too

After checking fuse, buy a test light from local auto/hardware store. Disconnect highbeam (with highbeam and headlights on, and dont worry you can not get electricuted from it) wire put pointy end end of wire or in wire plug or harness and other end on a ground eg. - terminal on battery or any clean unpainted surface of car or engine. the light should come on, if not problem in high beam swith or power to the switch, use test light to see if power comin out of switch & goin in to switch.

Do you have park,signal lights ,check fuses.

first check the wire make sure low beam power is there if there is power check your low beam fuse if fuse is good check the rely and if that good check head light module make its putting out power and if all that is goo then change you bulb it may be a double filament buld and the low beam side is blown

check the fuse may be blowed or there is a bad connection in ur wire goin to ur brake lights