Vince here with the light problem

Did you just buy this truck?

Help! Dashboard lights turn off when I turn on headlights at night ...

priuschat.com > Prius > Gen 3 Prius Main Forum

Jun 1, 2012 - Wow anyone know what is going on with my new prius? Dash Lights off when headlights on
May 30, 2012
Dash lights not coming on when headlights on
May 4, 2012
When my headlights are on, my dashboard is dark
Jun 14, 2005
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SOLVED: Headlights cause dash lights to turn off - LS1TECH

ls1tech.com/.../1432752-solved-headlights-cause-dash-lights-turn-off.ht...

Jun 9, 2011 - 2000 TA convertible: The problem started a few days ago, when I turn on my headlights, the dash lights and the radio display slowly dim to ...

Dash lights turn off when headlights turn on. **SOLVED** - Honda ...

www.civicforums.com > ... > 6th Generation Civic > ICE & Electrical

Jul 15, 2014 - OK, just picked up a 2000 DX hatch, automatic. Stock interior everything except previous owner changed gear selector stick with an aftermarket .

check the headlights auto unit for a malfunction

probably the headlight switch. also check the fuse panel. the dash lights should have their own fuse which if blown could indicate an electrical short.

possible problem head light relay or ground wires problem

i had this happen with my dodge ram 1500. the guy i bought it from put 350 dollar moon lit lights in with leds and they looked impressive but the issue was that they didnt go bright and i could only see 40 feet in front of me and i was sure taping led flashlights would have done me more good that those stupid headlights. then i had the idea of if the brights work and the dims dont then that means no electricity is getting to the dims so i decided to bridge the power from the bright headlight to the dims and it made all four work. now they all work, and only on bright. so im figuring there is a issue with the wiring in the truck. so this is a temporary solution if you really need just plain old lights like i did because i live out in the country

the light went out under the hood i bought new ones and put them. They still don't work "WHY"

I was told that it is the rheostat, go to Advanced or O'Reilly's.

replace the headlight switch

Just rotate the small knob at the left of your dashboard to the right. This will increase the lights of the dashboard.