How do you install a GMC Jimmy corner parking light?

Haven't done one on my '97 Bravada, but I would start by looking under and behind the bumper to which the light is mounted. I would say it's 75% likely that the bulb is connected into a grommet or fitting that simply twists or snaps into the back of the housing. (Kinda like most newer headlights are configured). Sounds simple, a little poking around will probably let you figure it out.