It may not look cool enough for some but the way I look at it, it gives the multitudes of inattentive/drunk/impaired drivers just that much more help in noticing I have come to a stop. I care more about that than looks. It's legal to run without one here in California but I'm not sure about Wisconsin since it's a state-by-state thing. The feds only require it be on the vehicle when sold to its first retail buyer.
Each state has their own laws for it, not all require the 3rd brake light. The feds don't care after it has been sold to the first retail buyer. That said, I prefer running with the 3rd brake light whether it's required by any particular state's law or not.
There are actually plenty of threads on here about mounting a third brake light in the centre hole of the mounted spare tyre. I don't mind it where it is from the factory, but l must admit the light in the centre of the wheel looks good too.
How can you trust an atom, they make up everything
I recently bought an AEV third brake light. Well AEV said that this light would work with a TJ, but the plug was different for my '06, so I did some wire splicing and made it work. I'm thrilled to have that ugly stock third brake light gone!!
I first made sure that the AEV light worked with my wheels, as I figured it would.