I tried to search all over the places on internet but to no avail. So did it on my own and the result was successful.
I replaced the passenger side rear tail light assembly of my Toyota Camry 2007. The method is same for the late models till 2011 no matter what the side is.
Its very easy to unscrew 3 nuts inside the trunk after removing the only portion of cover that covers the light but this is not it, there is a bracket under the light assembly which actually holds the edge of bumper and in order to pull it out of the bumper, bumper has to be partially taken out or loosen out.
To began the process I took the wheel out to unscrew 2 screws located right behind the wheel on the lining of bumper cover holding the mud flapper at the same time, if you have small philips screw driver of approx 2" length you might not need to remove the entire wheel. please see the image 1 as I took the pictures while fixing the light up and that too all alone.
There are 2 more screws to be taken out one holds the flap and other
holds the bumper cover, all need to be taken out to bring the flap apart.
Now there is a most
critical and important part for the entire job, after loosing the screws
and after pulling the flap down there is a hidden bolt which will come with small sized socket (usually available in basic socket set kit)
Loose the bolt like this.
Now just hold the loose side of the bumper cover and pull it out towards yourself, that particular cover side will easily come off.
You need to loose another screw hiding in the cover right behind the bumper, open the cover with a help of the plain flat screw driver and take the bolt out.
You have just loosen the edge of bumper cover holding the bracket of light, just pull the light towards you while facing it (do not forget to unplug the power supply sockets as in next image) bend it little to the top and slide the bracket out of the bumper cover edge and you got the light assembly out in your hand.
Disconnect or unplug the power supply from the sockets, just
press the plastic tip and pull the plug out from the light socket, if
you just forget the order don't worry, the gray will go in gray and
black one in black (please do this in the very first stage as i forgot
to put this in a beginning)
Now hold the new assembly, slide it's bracket in the bumper cover edge (the way it was taken off) slide the light carefully as there is a round shape plastic part in the body needs to hold the corner edge of the light assembly
Put the 3 nuts back on the light bolts from inside the trunk.
Attach the power sockets.
Push the snapped out side edge of the bumper cover back to its framing, the click sounds will confirm its proper attachment now put all the screws back in a same way they were taken out but don't forget to putting back the mud flap.
At the final stage, just mount back moldings from inside the trunk, please refer to the images, there are 2 bolts and rest clip in typed sockets, sometimes while snapping the moldings out the white male female clips remain in their housings, just take them out with hand or screw driver and put them back carefully back to the plastic molding before tucking them back
Hope this will help you guys out !
This entire process was done without any help of trained or professional, please handle the task by keeping maximum safety precautions and at your own risk :)