After Market Tail lights...

Initially, when I tinted my tail lights, I thought about making the inner sections light up. Therefore, I tried to pull them open using a heat gun, but it didn't work out. It looks like the housings are glued. I've read online that you could fit a 194 bulb from the side on the top section, but it doesn't look like there is room on the bottom. Consequently, I also am not sure how the light would reflect since it isn't designed to be lit. Now I am trying to put together the interior car led lights. Does anyone here have any experience with it?