Hello again!

I'm going to add a little more lights on my car. See the pic below.
How do I connect them the best way?
Can i take electricity from the rear lights?

 

Do you plan on running standard incandescent lights or LEDs? If it was me, I would run them on a relay that is triggered by the running lights turning on form the headlight switch. I like as little current going through the headlight switch as possible.

 

Okay!
It will be 8 LED lights (4 on each side)