The switch.
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.
Have you checked to see if the brights are not just burnt out? Rarely do they both go at the same time, but it is possible.
Bad bulbs ?- they are double filamented with the larger being for the tailights Bad switch?
They are either the wrong bulbs or one of the filaments is burned out. The bulbs should have two filaments. One is illuminated when the lights are on. The other is brighter when the brakes are used.
theres a short somewhere most likely bad ground
Blown fuse, failed switch, broken wire, burnt out bulbs,
First thing to do is check your fuses. Look under the hood for a fuse box there. It will be labeled on top and should show you what fuse is for what item. My 93 Prizm has this and there are two fuses for the headlights. Check them first. If they're okay, you need to check the plug-ins to the bulbs themselves. If they're okay, check the bulbs and if they're okay, check the wiring harness for any breaks. Your turn signals don't have a thing to do with your headlights.
GO AND BUY I NEW light bulb !
i have a 91 dynasty and my headlights dont work i have read on this site that it might be the headlight switch im not sure whats wrong with the dash.
An electrical short when you turn your headlights on. Check the fuses and make sure you have the correct fuse for the headlamps. Check all wiring to the headlamps, check for corrosion of the cabling or melting of the insulation.
If all the fuses and bulbs are new and work properly, the lights could be malfunctioning due to a short in the wiring. The wiring may also be damaged or burned out in places.
Assuming you mean headlights?? Check the stalk switch check the light relay Check the fuses