Well, I have one way that doesn’t need any bolts removed from the trunk. Unfortunately it involves having a vicious garage door attack your unsuspecting Clarity, or maybe backing into a garage door while it is going down. The trunk lid with the brake light comes right off and dangles from the electrical connection. The electrical connection can be unplugged where it enters the car.
FWIW, the dealer’s body shop forman said it broke the plastic under the lid and it’s one piece with the painted top so I have to replace the whole top which is a $500 part plus labor. However when I look at it, it appears that is not the case and that there is no plastic under the lid. There are bolts holding clips and plastic push in friction pins. Allstate and dealer are arguing with each other at the moment. I think it just needs the end clip on a bolt replaced since the cosmetic damage is minor and where you won’t notice some touch up paint.
Here are some pix that may help you.
The first shows the broken clip on the passenger side edge of the lid that appears to attach to a threaded bolt. One side of the clip broke off. It fits into a U shaped notch in the lid. The second pix shows the friction push in pins further to the middle.
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