How to dim the lights on the dash of a yamaha roadliner

some cars the dash has autodimmer
a sun sensor on the dash
some can be disabled , so read the users guide
to do that.
most cars, we can disable the out dim
in the free users guide, search word DIM.
bingo,? see on,off ,up ,down or auto?>
find the top of dash sun sensor
shine a very bright light there, and dash DIM goes full bright, if yes, bingo

see the users guide in the glove box yet
page 5-42 is your answer
see the words obstructs either sensor
bingo
it is in your manual this.

https://www.carmanualsonline.info/hyundai-elantra-2022-owners-manual/?srch=dim

Normally when the headlights are on the dash lights are dimmed down a fair amount so they don't glare in your eyes and affect your vision at night. The dimmer control that controls the brightness of the dash at night may have accidentally gotten turned way down which would cause the symptom you have. Find the dash dimmer control and try to see if you can make the dash lighting brighter and dimmer. It can be difficult to locate so you may have to check your owners manual on it's location.

auto dims the glass for the headlights at nighttime so the people behind you dont blind you.

Since you just bought the car, I thought that you might not be aware of the instrument lighting control. I apologize if you know this:
The dial on the dashboard to the left of the instrument panel controls the brightness of the instrument panel lights. Turn the dial to adjust the brightness.
To reduce glare at night, the fuel and temperature gauges dim when you turn on the parking lights or headlights. You then adjust their brightness when you adjust the instrument panel brightness. Turn the dial up as far as it will go to return the fuel and temperature gauges to their daytime brightness.
Hope it's that simple.

You probably checked this, but sometimes we forget.
The dial on the dashboard to the left of the instrument panel controls the brightness of the instrument panel lights. Turn the dial to adjust the brightness. Also, to reduce glare at night, the fuel and temperature gauges dim when you turn on the parking lights or headlights. You then adjust their brightness when you adjust the instrument panel brightness.
Turn the dial up as far as it will go to return the fuel and temperature gauges to their daytime brightness.
I hope helps and it's that simple for you.

your dash lights should dim when you turn your running lights on. This is to reduce the glare for night time driving. There will be a dial on the dash near the cluster that you can adjust the brightness of your interior lights

it can be done easy but i dont want to tell you as the lights dim for a reason so that at night they are not too bright and distrating when driving it is not safe to have bright lights on inside car at night they may blind you

This is the location of your BcM or Body control Mod. This controls all the things you are talking about. Lights, flashers,door locks trunk lock, that clicking you are hearing is a relay turning something on. So Lets say you are driving and it starts to get dark your BcM will change your driving lights to full night time mode, turning lights on, on your dash. Now you have Bright and dim functions. There is a sensor in the dash up front in the windshield that senses dark/light and does this. That is what you hear, a relay in your BcM clicking off/on some function of the car.

Yes dim the light panel. Their should be a small knob somewhere on the dash on the left of the steering wheel that you turn to increase or decrease the brightness of the instrument panel.

The dash panel can be dimmed. Check your owners manual and it will tell you how to do this.
Also, I cut about 2" off the top of my windshield so it would be just below my line of sight. This solved the reflection problem totally.