The following instructions are for removing the passenger side seat belt. The drivers side should be similar.
Take extra care when working with old plastic parts. They are easily cracked or broken.
Removal Instructions:Remove the long plastic carpet retainer that starts at the seat belt and goes forward. It just it snaps into place. Carefully pull up on it and it should come off.
You will then see a Phillips screw holding the small rear carpet trim that goes under the seat belt. Remove it and also remove the Phillips screw that holds the cover over the seat belt assembly on the rocker panel.
In the rear of the car, remove the two screws holding the upper center luggage strap holder and pull the upper center panel away from the third brake light.
You will see a screw holding the upper right panel, remove it.
Remove the seat belt escutcheon plate and then pull the upper right side panel away from the car.
Open the pass through door and remove the three or four Phillips screws that are on the passenger side of the speaker panel.
Remove the two or three Phillips screws at the upper edge of the speaker panel and pull that panel away from the body.
You will then see the upper seat belt assembly and the lower seat belt assembly as well as the part on the rocker panel are held in with # 50 Torx bolts.
The '88-89 belts also have a cable that goes to a push pin on the door post.
To remove this cable, remove the four screws holding the plate on the inside and then reach in and you will feel a knurled plastic nut. Unscrew the nut and it will come off the outer ring on the outside of the door post.
Some of the panels have Phillips screws holding a side and some sides have the rubber grommets and plastic pins holding the panel to the door. This is why you can pull the panels from the body on some sides of some panels.
Thanks to Jim Finn, member of the Reatta forums, for this information.
