Above the headliner, to the front of the sunroof.
In a 2005 Dodge Neon the sun roof may open but to close it, it won't go down and lock. If this happens, the motor may be shorting out. It is best to take the vehicle in to a certified mechanic.
under the head panel
roof scoop or sun roof
on the head liner on your car you will see a small cap near the dome light, turn it 90 deg and remove it, with the correct Allen wrench tun the bolt you see, that is directly connected to the sun roof motor.
If the spots are only thru the clear coat the entire roof should be carefully finesse sanded and then reapply clear coat as directed by manufacture.
If your Volvo 960's sun roof is not working, you might have an issue with the roof motor or with the fuse. You could also have a problem with the control switch or the wiring.
In the trunk, left side, is the motor. you can use your lug wrench to turn the crank
Sun roof
where is relay on 1994 Honda accord for sun roof
If your question is how to replace the motor, I'd go to autozone.com for the basic procedure with diagrams. If the motor has gone bad and you want to repair it, you'll find parts hard to find unless you know an electric motor repairman.
how to fix a sun roof top switch on a 1991 Oldsmobile
no <><><> The first car did not have a roof at all.