Dome Light

Hello everyone. Has anyone installed a done light into their vehicle? It seems as if the headliner will pop down easily enough. I need to check on the wiring though it should be easy enough. Attached is a picture of a European Mazda 2 with the LEDs that are available. I'm wondering if anyone has installed anything and actually removed the headliner to see if it is marked where the light should go. Thank you everyone!