Did you replace these with LED bulbs, by chance? If so, you need to add resistors to the wiring in order for them to function properly. LEDs draw much less amperage than incandescent lights do, not to mention that all of the LEDs in an LED bulbs run on the same circuit, whereas a dual filament incandescent bulb has separate circuits for each filament.
yes and no
Check the fuses and the bulbs.
buick centurys and other gms the multifunction switch has a tendency to fail and this will cause the headlites to malfunction and go out on high beam,switchj also controls the cruise and turn signals.
because that what they are for. otherwise they would be orange headlights.
Perhaps you need to check a fuse.
The lights on your Buick could be out for a number of reasons. It could be blown fuses, faulty wiring, or dead bulbs. Your mechanic would be able to test this.
if the headlights work it is bad wiring if they dont its a fuse
Most likely a fuse or a bad ground.
Blown fuse(s) or short circuit somewhere ?
More than likely a defective Flasher Relay. Replace it.
... As i know it, In every state in the U.s. A street legal motorcycles must have working turn signals, headlights, ect. so Yes.
A blown fuse.