Bad bulbs ?- they are double filamented with the larger being for the tailights Bad switch?
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there broke there broke
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.
It is either a bad relay , cut wire or the wrong wattage bulb .
u may have a defective multifunction switch
Check to see that the wiring is still in good shape and that they are all connected. As my previous car aged, this was a problem. Also, check the bulbs and their sockets. Sometimes they are dirty or no longer seat probably.
bad switch?
Check all you fuses that is a good possibility that's what wrong.
The switch.
It could be the dimmer switch that will adjust the dash lights
You might want to check or replace your dash dimmer light switch. I found this to cause either no dash lights or intermittent lights. Check the fuse box under the hood. The fuse you need is under the hood.
It could be a number of things. First check all of the fuses. It could be the module which controls the lights but it needs to be checked out. There is also a relay for the daytime running lights on your car i would check into that if all fuses are good.