On my 300 my 3rd brake light above the back seat went out and I cannot figure out how to get to it without breaking it.

It seams like it snaps on and off, but not sure. I took a screwdriver and tried to pry it off gingerly, but no luck. I also tried to pull the whole thing off, but not luck.

Does anyone know how to replace the bulb on this?

Thanks and Happy T-giving!

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'89 420 SEL
'90 300 SEL
'68 Olds 88 Convertible
'84 300 SD (sold it)