Troubles with my ford windstar van. please help

I have a ford windstar van 3.0 and when i open the doors, the interior lights do not turn on.what might the problem here be,a nd how can i fix it?

First, check the fuse. Then check the bulbs. Then check the door switches.

Make sure the switch on the light is not turned to “off.”

thanks for the help, ill try that…