Question about 2009 Hummer H3

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My auto headlights don't work. running lights work and when I switch to manual, the lights work.

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Could be the sensor usually on top of the dashboard. It may think it is always daytime.

Posted on Nov 29, 2014

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Posted on Jan 02, 2017

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1994 dodge dakota my headlights and tail lights and brake lights don't work my abs and parking brake lights are on my dash lights don't work either I replaced the headlight switch and still no


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 ?

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I have a 2003 GMC Sierra Z71 Extended Cab and the headlight switch won't turn off the headlights while the truck is running. When I got the truck the Photocell Sensor which is the black bubble that sits on the dash that tells the daytime running lights to turn off and on was down in the dash so I fished it out with my fingers and clipped it back in and it made the daytime running lights work. I still can't turn my headlights off while my truck is running though. The owner's manual says that I am able to do so. There's 2 light's on the switch by AUTO and the O for off that should light up? Is it my whole switch?

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The fuse panel diagram is in your owners manual, if you don't have one, go to Jeep.com and download it for free.

Fuse Panel Description
Cavity Fuse Description
  • 1 15 Amp Blue Horn Relay, Power Sunroof Relay, Power Window Relay
  • 2 10 Amp Red Rear Fog Lights (Export Only)
  • 3 20 Amp Yellow Cigar Lighter
  • 4 10 Amp Red Headlight Low Beam Right
  • 5 10 Amp Red Headlight Low Beam Left
  • 6 20 Amp Yellow Body Control Module/Power Door Locks
  • 7 10 Amp Red Left Park Light/Left Tail Lamp/License Plate Lamp
  • 8 Spare
  • 9 10 Amp Red Right Park Light/RightTail Lamp/License Plate Lamp/ Cluster
  • 10 Spare
  • 11 15 Amp Blue Flasher
  • 12 15 Amp Blue Stop Lights
  • 13 10 Amp Red Body Control Module/ CMTC/Cluster/Pass. Airbag On,Off Indicator, Auto Daylight Mirror/Light Bar Switch (Renegade Only)
  • 14 10 Amp Red PDC Fuel Pump/AC Clutch, Starter Relay/Engine Controller/Transmission Controller (Diesel Only)
  • 15 Spare
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99 chevy dash,parking running lights don't work!


did you replace the dimmer switch on the dash by the headlight switch

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First check the fuse, the clearance lights are not factory in most cases and the wiring gets shorted from poor wiring. Once you replace the fuse see if the lights come on, if the fuse blows right away find the wiring to the clearance lights and disconnect them, if the short goes away it is a I said the wiring is shorted. If you don't have the owner's manual you should be able to download it at the link provided. It should be fuse #10 a 20 AMP in the interior fuse box. http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/97ecoog1e.pdf

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