Bad bulbs?
Bad Hi-low switch?
how do you turn on high beams on 1979 corvette
== == more than likely your dimmer switch is bad,hope that will help
There is a foot switch on the driver's floor by your left foot.
Headlights have two filaments; one for low beams and one for high beams. There is a good chance that the low beams are burnt out. This doesn't necessarily mean that the high beams won't work. However, it's not too common for both low beams to burn out at the same time. Of course, it could be a fluke. I would replace the headlights with new ones and then go from there.
Check your owners manual.
First check the bulbs, if the bulbs are good I would suspect the high/low beam switch is bad.
The low beam lights should be set up as the outermost headlamps. All 4 will be on the when the "high beams" are switched on
== ==
fuse, bulbs or switch
are you pushing or pulling. one direction flashes the high beams, the other clicks them on.
Your headlights are burnt out. Ever see a car coming at you with their high beams on and when they turn them off they only have one or none. Check with the parts store but that would be the easiest problem
Your high beams work but your low beams do not because the switch is broken that switches between high and low beams. Electrical switches wear out.