it depends on what you drive if its some kind of car under neath the hood on the right side with a box covering it or look below the steering wheel above the collom
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing
Check the switch.
The dash lights on an Explorer are used to light the warning symbols and to illuminate the speedometer, gas gauge, and RPM gauge. These lights are controlled by fuses.
the dash and radio lights are supposed to dim when the headlights come on. Make sure you have the brightness of the dash lights turned up as much as possible.
Could be a bad controller or multiple blown fuses. Check the fuses first. I had a 95 Ford Ranger that had a bad controller and the wipers, interior lights, fuel gage, and temperature gauge would all act up randomly.
They should just dim. By turning the headlights on, the engineers assumed it would be dark. Often there's a knob or wheel on the dash where you can adjust the brightness of your gauge lights.
If fuses keep blowing on your Honda, you likely have a short somewhere. You can get a multimeter and a copy of the wiring diagram so you can track down the short, or you can have a mechanic do it. If you've recently installed anything new such as a radio or a gauge or switch, that would be where you want to start.
Start with the fuses, then go to the more complex problems
Check the main headlight fuse. Check the start button, it interrupts power to the headlights. If the high beam indicator and the gauge lights are out it could be this switch.
first turn on your headlights. now look on your dashboard for a little lightbulb with a knob next to it (it's your dimmer). twist it & all your interior lights should go bright & dim. if that didn't work then check your fuses (interior lights, cigarette lighter,panel lights)if they're good or not. cuz sometimes on certain cars they're connected 2gether. if the fuses r still good then u might have 2 check all the bulbs indavidually. gauge,shifter panel (& that will take a good while,cuz you'll have to take it all apart to check it). try this & hopefully you might find the problem. good luck!
First thing you want to check is the dimmer switch to see if it is turned all the way down.
the first thing to check would be the alternator/voltage regulator