I'm assuming that you mean the dome light... Without the exact make, model and year of the vehicle, I can only give a general answer. Check your owner's manual for dome light replacement instructions and illustrations - most will have them. See sources and related links below for dome light bulb information.
Remove the plastic interior panel to access the rear of the tail light assembly. www.trailvoy.com Envoy enthusiasts forum!
How do you replace the rear brake light bulb on a 2001 Honda civic?"
The interior of the car is whale penis
where can I find a video on how to replace a 2006 rear SIDE MARKER bulb>
What year?
unscrew the 2 screws holding the light in. pull the light out. replace the light.
http://www.civicforums.com/forums/117-interior/155281-removing-rear-deck.html
How do you remove the interior panel containing the rear woofer in a 2002 jaguar xk8 coupe? thanks
In order to replace the rear window tail light you need to get into the truck. Once inside the trunk look to the top of the trunk and look at where the screws are for the rear tail light. Unscrew them and the entire housing for the light will pop off.
How do you replace the third rear brake light in a 2005 buick allure
In order to replace the light, you need to open the trunk and pull back the panels to reveal the plastic wing nuts. Then, loosen the wing nuts and take out the whole lens. Then, replace the light bulb.
you take the light out and put the new one in