I just bought a 1994 Buick La Sabre and I noticed the interior courtesy lights don't work. Is that a fuse issu?

Also, the power door locks and the interior lights don't work either. Is that fused related also?I just bought a 1994 Buick La Sabre and I noticed the interior courtesy lights don't work. Is that a fuse issu?may be,think if i am not mistaken its labeled courtesy ,but press all the fuses or kind of pull 'em in and out,their little prongs get corroded and loose a clean connection too,if none of these,then the actual bulb may also be dirty at each end or popped,you'll be able to see if it's little fillement or wire is burnt,BUT BE CAREFUL ,this little bulb gets RED HOT FINGER PRINT REMOVING HOT IN LIKE A FEW SECONDS,owww owww owwwww,..:) you can call me ole burnt fingers !! haahaaI just bought a 1994 Buick La Sabre and I noticed the interior courtesy lights don't work. Is that a fuse issu?Could be;

Bad switches at drivers side door handle

Bad light switch rheostat that controls interior lights as well as dash lights

Lack of a proper connection of power source to above mentioned switches

Bulbs could be burned out

Possible fuse blown,although if you have driving lights it may be the rheostat

Unknown cause