Change light bulb in fog light on 2003 subaru outback wagon

Knowledgeable mechanic should do it 15 minutes.

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The bulb in our 2005 Outback dome light has been replaced twice---I found the best way to remove the cover is with a dime.

Good luck!

How To Install Replace Change Taillight and Bulb 2000-04 Subaru Outback

most likely the hi lo switch

check that the ground wire is connected to ground. You can test the switch with an ohmmeter in the ohm position to see if it's good. You can test power to the switch from the battery or fuse, or whatever power source you are using.

Below is a link for the wiring diagram you requested:

2002 Subaru Outback Wiring

get in behind headlight under hood and look for a central plug or screw for the headlight to remove to get to the bulb you will have to unplug the wiring to pull it out and a spring clip youll have to press in towards the centre of the globe to remove it

You change it from the front of the car.

To remove the fog light - firmly grasp the black plastic lens protector along the outer edges and twist it to the left (counter-clockwise) to remove it.
Now remove the two bolts just above the fog light - the whole thing comes out as an assembly. Then you can disconnect the socket from the back of the assembly

there are individual fuses for each side headlamps,both are 15amp located in fuse box underhood,check em out

Each head lamp also has it's own relay, you can rule the relay out by swapping the left head light relay with the right head light relay & see if the problem moves to the other side...The relays are also in the same under hood fuse box.