2015 Mazda3 Led scuff plate help?

Hi all,

I am trying to install some led scuff plates I have purchased and can't figure out where to tap the wires into.

I've done some research and looks like the dome light is the best bet but not much on the internet in terms of tutorials can anyone help with which wires to tap into or any guides up?

My car's a 2015 Mazda 3 from UK thank you!
 
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