Possibly the alternator.
The first check would be the fuse for the dash lights. If the dash lights are out too then it is likely to be the fuse.
Check the fuses.
The dash lights will dim when the head lights come on. Check for a dimmer switch on your dash. It allows you to adjust the dash lights so they are not too bright and affect your nighttime vision. It may be set too low.
In most cars there is an dash light adjustment of some sort. My guess is yours is turned down too far so the lights don't show.
Are you talking about ALL the lights, or just the dash lights? If it is just the dash lights, you might have a bad ground for the dash electronics, or bad connection at the Dash Dimmer control. But if you are talking about headlights, too, check the gound wires on the battery... perhaps wiggle them around until the lights flash. The brake light switch should not do this. It only controls the back lights. if its only the dash lights lighting up when you hit the brake, check the brake bulbs and make sure that they are the correct bulbs. (dual filament) and that the base of the bulbs contacts arent touching
depends on the car, most common problem for loss of dash lights are from having the switched turned down too low or off.
Have you checked all the relays? If so, check the wires for shorts. If you have dash lights its probably a short. The fuse for brake lights often also carry the dash light too in an effort to let you know that you have brake lights out.
I have a 97 Buick Park ave and the dash lights went out ? all other lights seem to be working , and I cannot identify which fuse , if any could be in need of replaceing . I cannot , with the owners manual , identify which fuse it is that controlls the dash lights ? there are too many , fuses with confusing acronyms ? Any one know exactly which fuse I need to check ?
Check the fuses. There's usually a separate switch for the dash lights, which willmake them brighter or dimmer. It may be turned down too low. Check to make sure parking lights work as well, if they do not then could be the headlight switch as there was a recall on them.
When the dash lights dim on the Nissan Pulsar SS 99 with the use of the turn signal, it is usually an indication of a bulb burned out in the turn signals. It can also mean that the flasher is bad and taking too much juice.
Me too on a 2001 Sequoia. Drives fine, headlights, parking lights and dash lights work but that's it. Backup lights, air conditioner controls, all gauges, all indicator lights on dash all dead - all at the same time.
It could be one of two things: This is a factory setting to focus your attention on the road and not the dash. Possibly the high beams are drawing too much power from the alternator.