possesed interior lights

[frog05]

all of a sudden the light uner the glove box and the over head light that come on when you turn the switch or open the door will not shut off. It is a 1991 gmc jimmy with 103888 miles. what is the problem?

[Teaman3]

Is there a light right at the back with a rocker switch on it ? It's a master switch and can switch to "on" by the vehicle's movement, or accidently knocking it when using the cargo space.

PS Check the bulbs, I think the one in the driver footwell and maybe the back one, is blown.