Burned out bulbs, blown fuse, failed switch, broken wire, etc.
the high beam indicator is only on when the high beams are on
low beams
9006 on the low beams, 9005 on the high beam.
sounds like you have a short in the low and hgh beam switch take it to auto electrician
I'm not sure what you mean by that. Usually low beams have its own coil, high beams have its own. They work on separate cirtcuits.
Low beams
the bulbs in your car have two filaments, high beam and low beam. as you generally use mainly low beam the filament wears out a lot quicker than high beam. so replace your bulbs, as it couldn't be anything else.
are my low beams supposed be come on also when my high beams are on in my 1994 gmc sierra
is a switch to change to low beam is located under the emergency brake
hi-beam switch is faulty
I think the low beam lamps have two filaments. So it's possible that those low beam filaments in the "low beam" lamps are burnt out. When the headlights are on dim, only the two outside bulbs burn. When the high beams are on then all four will burn.
the low beam part of the bulb could be bad.