The headlights are sealed units, unfortunately they do cloud over a bit with age. Try a cut and polish on the outside of the lens to clean them up a bit, but you would have to go to a plastic welder or similar to get them to remove the housing, and even then, cleaning them may not remove the cloudy effect.
1996 Legacy: 1. Remove electrical connector. Must push in on sides. 2. Remove outer rubber boot. 3. Unlatch retaining spring. 4. Remove bulb
Open the 2001 Subaru engine compartment hood. Remove the wiring harness from the back of the headlight. Remove the headlight assembly bolts. The headlight will come out. Reverse the process to install the new headlight.
Sorry, but it won't. Subaru's changed their headlight shape every 3 years or so. They made a change around April 1997, so the one's before that are different from the ones after.
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The headlight has a couple of large black covers on the back that can be unscrewed. Remove the head lamp being careful to not touch the glass.
See "Headlight" on page 52 of chapter 11 "Maintenance and Service" in your "OWNER'S MANUAL".....
To replace the headlight bulbs on a 2011 Subaru Legacy, first, open the hood and locate the back of the headlight assembly. Twist the bulb socket counterclockwise to remove it, then pull out the old bulb. Insert the new bulb into the socket without touching the glass, twist it back into place, and finally, test the headlights to ensure they are working correctly. Always refer to your owner’s manual for specific instructions and safety precautions.
To replace the low beam headlight on a 2006 Subaru Legacy, first, open the hood and locate the headlight assembly. Remove the plastic cover or dust cap at the back of the headlight, then disconnect the power connector from the bulb. Twist the bulb socket counterclockwise to release the old bulb, then insert the new bulb and twist it clockwise to secure it. Reconnect the power connector and replace the cover before closing the hood.
remove negative battery cable for 15 minutes
You have to go from the wheel well.Pull back the fender liner toward the front and you will be able to reach your arm in there and remove the bulb. It may be helpful to remove the wheel in the process, if you need more more to work with.
On a 1998 Subaru Legacy, the headlight relay is typically located in the fuse box under the hood. Specifically, it can be found on the driver's side near the battery. Check the fuse box cover for a diagram that indicates the exact position of the headlight relay. If you're having trouble locating it, refer to the vehicle's owner manual for further guidance.
You remove the plastic cover with two "quarter revolve screws" Then you loosen the battery (or washer fluid container depending on which side it is) and loosen the plastic cap- remove the spring and remove the bulb. Assembly in reversal order /K