Tail lights
 

Can someone advise me on what, if anything is missing on the back side of these tail lights?
What goes in the opening at the top?

https://cimg4.ibsrv.net/gimg/minicoo...52fc9685b3.jpg

Nothing, those look like aftermarket full LED lights. Just plug and play. Our union jack 2007-2015 ones below.

https://www.ecstuning.com/b-ziza-par...g-tail_lights/

https://assets.ecstuning.com/product...2238_x800.webp