Need help with a Dodge Charger question.

They still draw more power than would go through the switch with relays. The relay set up isn’t likely to make them brighter like running relays with incandescent lights, but it still lowers the draw on the switch. So it’s still a good idea.
It sure is, plus we have a upstanding member that makes a very high end harness at a really reasonable price. What's not to love?