Hi im new at posting stuff, and recently joined this site. i have a 2005 GMC Sierra 1500 SLE and im wanting to put cab lights on it. i was wondering how hard of a job this is?

i also read on a diesel forum that there was a place to plug up a cab light wire harness, and i wasnt sure if this plug in would be on my 1500.

as much help as i can get would be greatly appreciated!