Dash light not working with headlight on

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
More results from priuschat.com

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 .

These are all different circuits. The brake lights are on a 10amp fuse - the headlights are on a 50amp fuse - and the parking and dash lights are on a 20amp fuse.
Do you have power going into the headlight switch and the brake light switch ?

If neither your front or rear lights are coming on I would think it was a problem with the headlight switch. Even if that switch is bad, your brake lights should still work when you press on the pedal. Usually a good indication to determine if the headlight switch is the problem is to see if your dash lights are not working as well. If those aren't working it's usually the headlight switch itself. If the dash lights DO work then your headlight/tailight relay is probably defective. Swap with a similar relay to test.

Check out related help links with solutions to troubleshoot these problem.
Click the link below directly:---
Heater fan and headlights will not turn off with ignition off? http://technoanswers.blogspot.com/2012/01/heater-fan-and-headlights-will-not-turn.html

---------
High beams stopped working but headlights still work?

http://howtobyme.blogspot.com/2011/11/highbeams-stopped-working-but.html

---------------
Only one head light works on 2001 Dodge Caravan? http://howtobyme.blogspot.com/2011/11/only-one-head-light-works-on-2001-dodge.html

----------------
Headlight Assembly Removal On Honda Accord http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html ------------- Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html-----------
All headlights not working? http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

----------
Headlight wiring diagram for 1997 Lincoln Town Car?

http://technoanswers.blogspot.in/2012/02/headlight-wiring-diagram-for-1997.html

-----------
Dash Lights And Front Marker Lights Flashing On And Off http://schematicsdiagram.blogspot.com/2012/10/dash-lights-and-front-marker-lights.html
---------- 2001 Chevrolet Tracker: Headlights and Dash lights Pulsating? http://whoisbyme.blogspot.in/2012/06/2001-chevrolet-tracker-headlights-and.html
--------- No parking lights and headlights not turning OFF? http://technoanswers.blogspot.com/2012/01/no-parking-lights-and-headlights-not.html
------------- How to replace HID headlight bulbs for lexus 400h? http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html
--------- Head Lights Comes ON by Itself? http://whoisbyme.blogspot.in/2012/07/head-lights-comes-on-by-itself.html
--------- Only high beams work but head lights not working on Ford F350?

http://howtobyme.blogspot.com/2011/11/only-high-beams-work-but-head-lights.html

-------------

Only high beams working on GMC Savana?---------
• Working of Headlight switch?

----------
• Both headlight bulbs blow together?
--------

• Car headlight bulbs don't last long?

--------
How to replace Headlight Bulbs on Lincoln Town Car?

http://howtobyme.blogspot.com/2011/12/how-to-replace-headlight-bulbs-on.html

How to change headlight?

http://repairhelpcenter.blogspot.com/2011/12/how-to-change-headlight.html

-------------
Both headlights and turn signals not working? http://schematicsdiagram.blogspot.com/2011/12/both-headlights-and-turnsignals-not.html

----------
Headlights will not turn OFF on Ford expedition and car trailer?

http://technoanswers.blogspot.com/2012/01/headlights-will-not-turn-off-on-ford.html

----------
Headlight Assembly Removal on 2010 buick lacrosse? http://technoanswers.blogspot.in/2012/04/headlight-assembly-removal-on-2010.html
--------- Headlights flickering and car hesitates to start?

http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html

---------
Hummers headlights flashes while start?

http://technoanswers.blogspot.in/2012/02/hummers-headlights-flashes-while-start.html

----------
Using non-AFS headlamp assembly for AFS assembly?

http://schematicsdiagram.blogspot.in/2012/02/using-non-afs-headlamp-assembly-for-afs.html

------------

How to replace Headlight Bulb on 2001 mitsubishi magna
http://www.howtorepairguide.com/2012/10/how-to-replace-headlight-bulb-on-2001.html

---------
These details will help.
Thanks.

No. Dash lights being out could be a bad headlight switch, since the dash lights are routed through the headlight switch, not the dimmer switch. Park and tail lights also controlled by the headlight switch.

If the tail lights and the dash lights stopped working and the tail light and the panel lighting fuses are both o.k. and you can find no other blown fuses then the problem is most likely the headlight switch.

The relay has nothing to do with the tail lights, but replacing the switch sounds like a good idea. There's a nut holding it in place, see http://www.skandix.de/en/spare-parts/electrics/switches/switch-headlight/1027524/ to get an idea of the construction. And the price. This is not worth fiddling about unreliable workarounds...
In addition, if fuses 15 and/or 16 burn frequently there might be a problem with the tail light cabling.

Good luck
Ingo

look for the relay for the parking light

This is a problem with all trucks what you need to do is get the dash or cluster out and get it repaired at gm they send it out and after a few days it will be returned functional

You would have to check and see if you are getting any power out of the light switch. There is a seperate wire for the headlights and the dash lights.