What will cause the dome light not to come on

Sounds like a wire or switch is bad.

Are you saying that the dome light doesn't work when opening the door? Or when using the dash dimmer control to activate it? Or both?
There is a position on the dimmer control of most vehicles to disable the dome light. Verify that you don't have it in that position. It is normally at the opposite end of the dimmer rotation from the position that turns the dome light on. If the light doesn't work from either the dimmer or the door switch, check the bulb. They do burn out. If you replace it, do not touch the glass of the new bulb directly when installing. They get very hot and the oils on your fingers will cause premature failure. If everything seems ok (dimmer/door switch/bulb), check for a blown fuse. Otherwise the problem is in the car wiring.

There is one of three common issues that can cause this.

1. The Lamp Dimmer for the dash/overhead lamps is turned to the Dome Lamp Off position. Many people are unaware of this feature.
2. The door switch that activates the dome lamp is defective.
3. The dome lamp bulb is burned out.

If none of these are the problem, then there is either a blown fuse or a wiring problem in the lamp circuit.

is the bulb blown?? remove and test for power in socket

Could be you need to push the button or turn the knob on the dashboard,(maybe it's off). You have a blown fuse or the bulb in the dome is burned out.

bulb is prablly blown if they are good then there is a fuse for it

Glad you solved it.

bulb or fues

Maybe check to see if your button next to your headlights switched is pushed in or out?

Check the dome light, there is supposed to be a three-position switch; off, on constant and on when door opens...try that switch and see if the lights come on...if that doesn't work, check the bulb to see if it is burned out and if that doesn't work, check the fuse panel for a blown fuse...