Look for a fuse in the fuse panel that is labeled " B/U LPS ". It is the backup lights fuse. There should be a light green wire coming off the back side of the
fuse panel that will run to the backup light switch/ (neutral safety switch), on the steering column. Then a darker green wire will run from there through the firewall in the harness to the rear backup lights. these wires are powered by the key on powered fuse in the fuse panel and the backup portion of the NSS will close when the shifter is placed in reverse.
The fuse is in the bottom vertical row on the right.
Here is another view.
The light green wire runs to the NSS. shown here on top of the column. The green wires and the purple wires go to this switch. As been said in previous posts.
From there they run out to the rear in the tail/brake/signal light harness.
