Identify the diffusers and position them on the back of the lens before removing the adhesive protection backing. This photo identifies the outer diffuser on the driver side. As shown in the photo, be careful to align the material before removing the protective backing. The adhesive will be difficult to remove so take your time in the process of positioning the diffuser before attempting to glue it in place.
Trim the diffuser material to match the contour of the outer lens. This contour will be different for Rally Sport and standard body lenses. Notice that the outer diffuser wraps up the edge of the inner reflector. Do not trim off the material that runs up the inner edge of the reflector. Only trim the material that wraps onto the flat surface of the inner reflector, as shown by the trim line in the photo. It is strongly suggested that you use a new sharp razor blade for this process.
Repeat the procedure for the inner diffuser.
Trim the diffuser material to match the contour of the inner lens. The inner diffuser follows the edge contour of the inner reflector. Again, this contour will be different for Rally Sport and standard body lenses. Again, It is strongly suggested that you use a new sharp razor blade for this process.
This is how the taillight housing should look after the diffuser is installed.
The completed lens can now be reinstalled in the taillight housing. Be sure to lock the locating tabs on the lens into the corresponding slots in the taillight housing. This is how the taillight housing should look after the circuit boards, diffusers, and lenses are installed.
Position the new Rear Body Panel light harness across the trunk. Notice that each taillight assembly will have two taillight housing connections. The inner panel housing trunk lock mechanism will be the focal point for the fuel tank extension plug-in, license plate plug-in, and main harness grounds. Side marker lights will retain the same original connector and lamp and will be a direct plug-in.
As previously stated, the trunk latch mounting plate locates the main connector for the license plate and fuel tank sender connections. The ground terminal shown in the photo of the rear body panel harness is the system ground for all the rear lighting. It is extremely important that this ground connection be made securely. The star pattern on the ring terminal is made to establish a good bite into the steel trunk latch mounting plate when tightened correctly. Good grounding is essential to the operation of the LED circuitry.
The taillight housings can now be installed and the LED circuit board lead wire connections made to the new rear body panel harness. Notice the plug in connection to the existing rear body intermediate harness next to the side marker light. The new harness also contains the original harness retention pin clips that are used to locate the harness across the rear body panel.