It's a pity to spoil the clean lines of the coupe with a clumsy third light, but my local specialist has had a few nice coupes in over the years with rear end damage, and I feel the coupe has attracted some negligent and some aggressive tailgaters.
I've seen a coupe with a very tidy trunk lid spoiler with a third brake light built in – that gets the light up to a reasonable height. To my eye, it improved the lines of the car.
Narva does a fairly neat – wide, shallow light with angle adjustment (see first attachment) and that might be sufficiently clean.
I took out the led body (second attachment) and was able to separate the front red plastic from the black case. The usual process of inserting a blade and levering very carefully. Apologies for no photo- I don't want to remove it now it's installed. By filing off the edge of the red plastic, it fitted (just) into the gap between the back of the headliner and the rear screen surround. This required cutting an indent in the screen surround rubber, taking a lot of care....
The wires ran inside the headlining and down inside the rear pillar trim with no problems. I took out the parcel shelf to get the end and feed them through to the trunk, where they are clipped on to the brake and earth lines.
Third attachment shows the view without, and fourth with, the brake light on.
Because the light is not enclosed against the rear screen, there's some reflected light at night, but the broader glow might be desirable. I might put in a small shield under the light to the rear screen, one day.
