Aftermarket Tail lights: Top Bolt????

[Ghostface80]

I just got some of the Depo JDM tail lights to replace the stock pink ones on my '03. My question is how in the world do I take that top bolt off when reaching inside that tiny space? Specifically, which tool do I need? A pic of the tool needed would be nice also. MUCH MUCH appreciated, thanks!

 

[Ghostface80]

Nevermind.. a clever search revealed a 10 mm socket as the answer.