Interior Light, Help?

[Gerrish]

My interior light on the roof stopped working afew days ago on my 07 Campus, took out the light to see if I could replace the bulb, but seems like a concealed unit. If you can't replace the bulb, has anyone got an idea where I can pick up a new unit from, or an LED one? You probably all know what it looks like already, but here:

Thanks.

 

[MWright]

Turn the unit over an pry out the cover where is pivots upon.

I think it's a 36mm festoon