I just spent an hour replacing a headlight bulb on the passenger side of my van (had to remove the air cleaner to do so) and now I am attempting to replace a the bulb in the cyclops in the rear. That's the high mounted brake light. I tried unscrewing the lens but it won't come out. Do I need to go at it from the interior? Does anyone have an exploded view?
How to change bulb on cyclops (third brake light) on 1994 Ford Aerostar
If lens has screws then should be able to replace from there. Because of age the lens is likely stuck to seal. Get a very sharp pick and try to pry gently at lens/seal surface.