The flap for the vanity mirror on the sun visor has lost its tension and just hangs open-can I fix it or do I need a new part?

What type of automobile are you working on??

The vanity mirror lights get power from the body control module same as map lights and rear courtesy lights among others.
You may need a wiring diagram to diagnose.

I'm not sure you can. Talk to a Subaru parts guy at a dealership. What I can tell you for sure is this: I replaced the passenger side visor on a '94 Legacy Lsi that was torn off when the car was stolen and driven from WV to FL. I couldn't find a used one and the insurance company wound up paying 135 bux for an original equipment replacement. Good luck. . .

Under the head liner

SA23 is the number to ask for

My visor broke also, but I REFUSED to pay the $120+ Kia wants to replace them with no guarantee to not have future problems. I took the advise of jacobib berto (the first reply), but went to Lowe's and bought a pack of circular magnets for $2.70. I then superglued 1 magnet to the "mirror flap" on the visor and then another to the side of the light on the roof (make sure you have opposite polarity prior to gluing). This may cause the "mirror flap" on the visor to open when attempting to pull the visor down so I used 2 strong rubber bands on the visor to keep the visor closed when pulled down the visor. Putting the magnets to the side of the mirror flap and the light still allows functionality of the mirror. I thought this was an okay sacrifice when considering the $100+ savings.

yes they should be there

i would go to your nearest dealer and order the sun visor you will need a 15 torx bit three bolts remove and replace you should be able to handle this repair yourself and save about 100 bucks good luck

ok.. you either bought the lights over the vanity mirrors in the sun visors... or the lights are not working in the sun visors???? Wow man!... think you could take additional classes in the English language? ... what's this issue with 'extra clock' in between the sun visors are not working'???? Tell you what, since you're convinced you have a problem, Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.

the retension spring is weak, it cant be fix, have to replace it, check the dealer or your near by salvage yard.