Help with Raptor-style grille marker lights

[ksneubec]

I'm looking for help in what to/how to tap into the truck's lighting for the raptor style DOT lights. I saw several threads mentioning the install, but didn't see anything specific about what to tap into, and where. I'm assuming people are tapping into the truck's marker lights but I'm open to suggestions.
Please feel free to direct me to the right thread if this has been covered, but I couldn't find anything. Any help is appreciated. Thank you!

 

[TNRamGuy]

I think another member did a video of this. @Waterfowler41

 

[ksneubec]

I think another member did a video of this. @Waterfowler41

That's great, thank you!

 

[BigBlueBeast]

Killer vid I think I am gonna do this