Mercury 1996 Sable Manual page 348

To install the brakelamp:
1. Install the bulbs.
2. Position the brakelamp over the tab slots
and line up the tabs with the tab slots.
3. Push down and toward the rear window to
engage the tabs.
4. Push attachment toward the rear window
and line up the slot in the attachment with
the edge of the sheet metal hole.
5. Release the attachment slot onto the sheet
metal hole.
6. Replace the package tray trim.
Wagon
Parts of the high-mount brakelamp (wagon)
321