So far I've found it nearly impossible to find and purchase a used one of these.
Yes thank you for the info.Overview:
Open hatch
Remove liftgate lower trim finish panel
Disconnect high mount stoplight electrical connector from main liftgate harness
Details:
With hatch up and looking at the bottom of the high mount stoplight, remove the two high mount stoplight access hole covers (one on left, one on right)
Remove the now uncovered screws
Remove high mount stoplight and wire harness from the spoiler.