Chicken Lights, Ford F-150

Hello, I want to install a package of chicken lights on the sides of my f150. They are 6 on each side and are led type. I plan to connect them in series, and I want to take the power supply over the wiring that runs under the sides of the rear seats. To do this I will make a hole with a drill to pass the cable of the lights to the interior of the cabin. My main problem is that... I don't know which wires I should connect the positive and negative poles to. Be the ground and a wire that allows you to power the chicken lights only when it gets dark and the automatic lights come on. I am basing on the installation that is done in this video where he connected some running lights and it turned on when he opens the door:https://youtu.be/-_vhks3j-bA However, it is worth mentioning that I want my chicken lights to stay on based on the auto lights that stay on when it gets dark or even if I turn them on manually Could someone help me, please? Or if you have better ideas to do, I'll appreciate it. Flavs117

The year of the truck would help.Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB