Sounds like it's simply a bad switch if you're talking about the normal headlights. If it's daytime running lights there is a "kill switch" in the handbrake that turns them on when the brake is released and off when the brake is activated.
If the lights come on but do not flash, replace the flasher relay. If they will not come on check the fuses.
you could have possibly bought the wrong bulbs and/or fuses. or when you were replacing them you may have damaged the wires. Also the reverse light switch may be defective.
First check the bulbs then check the fuses.
Flasher relay is bad if the lights come on but do not flash. If they lights do not come on at all then the bulbs may be blown or the fuse if blown.
Faulty bulbs, faulty switch, faulty wiring, disconnected ground.
check your fuses first, if none are blown, check the bulbs if none are blown, then take it to a shop you've got a wiring issue.
Check turn signal switch. Pull back lighty on turn signal lever and brake lights will come on. Replace switch inside steering column. The green and yellow wires you see at the bulbs are the ones that control the brake lights and turn signals.
sounds like you need new taillight bulbs
Check the fuses first. Your owner's manual should tell you where they are. Most likely its the fuse. If not, check the bulbs because on some vehicles a bad bulb may break the entire circuit. They are separate circuits, separate fuses and separate swithes. Check the fuse and the tail light bulbs.
First check if bulbs and fuses are good and see if the back lights come on when you turn on the lights. If everything works and the bulbs and fuses are good then its most likely the brake switch on your brake pedal, its usually the only thing wired to the brake pedal. If its not that you might have a short somewhere but usually its either fuses or the brake switch, both are cheap and easy to change.
Check the fuses.
There is a switch under brake pedal. This switch controls the brake lights. They some times go bad. Have someone stand behind vehicle while you push on brake pedal, if no brake lights come on. Try pushing the brake switch by hand. Check for power with a voltmeter.
turn signals won't work. changed all the bulbs. Hazard lights work. 1999 Chrysler Sebring hardtop
There is a switch on the shifter or trans that turns on the lights when the vehicle is placed in reverse, it is out of adjustment or faulty. And don't forget the bulbs or fuses as a cause.
1995 Chevrolet Monte Carlo no tail lights or dash lights they will come on at time and go off the fuses are not bowed. The tun singles and flasher and brake light work. What should I look for now?
Check the fuse panel, replace the burned corresponding fuses, or have the car checked out for electrical short
bulbs or bulb sockets
my guess is that it is the brake relay
check the Bulbs
did you check the reverse switch on the trans ?
Does it have a third break light? Check all the bulbs in you break lights that they are the right ones in the right socket. They may look the same but the slightest difference in bulbs being put in the wrong place with cause what you are experiencing. Also, check you fuses.
check the fuses
First, check the tail lights. Turn on the headlights and see if the tail lights come on at the same time. If the tail lights come on but the dash lights don't, it's probably either the switch or the bulbs. If NEITHER come on, it could be the switch, the fuse and of course, still the bulbs.
Check these things:1. Are the bulbs okay? 2. Are the fuses good? 3. Using an voltmeter or circuit checker see if ther is power at the bulb connector. 4. Finally check the switch at the brake pedal.
You can check your fuses, but most likely the bulbs have just burnt out. This happens frequently.And for replacing them, refer to my other answer here:How_do_you_repair_the_dash_lights_on_a_1990_ford_escort