How 2: Rear lights + brake lights?

[JoFreak]

Thank's to you all, but all of those solutions cost way more than what I am willing to pay for this little gag.
The dimension engineering solution costs ~60$, the Tamiya TLU-02 costs ~60€, and to ditch my perfectly fine MMP for a probably way more expensive MGM just for some lights is too much as well.

I think I do know what I'm going to do with the servo board.
Tomorrow, when my LEDs and resistors should arrive, I will do a quick soldering job to see if it works as I imagine.
I will post a wiring diagram if it does.