The rear light wiring harness can break where it attaches to the trunk hinge. As a result, the reverse lights or the shift indicator may not work and the rear bulb fault indicator may stay on constantly. The harness can be repaired and does not have to be replaced.Google+
Car Problem Reports
Toyota Camry Rear Light Wiring Harness May Break
Toyota Camry Problem
Average Mileage: 145,833 mi (50,000 mi - 223,333 mi)
!994 Camry xle 6 cyl. Backup lights work but the transmission is affected when it trys to shift down when coming to a stop. I unhook the harness on trunk lid on drivers side and then transmission shifts ok but don't have backup lights. Also it messes up indicator lights on the console. Seems like something is shorted out in the backup light circuit. If you put tranny in nutral when it shifts down then the noise goes away. Sounds like a rumble noise and just can't quite make the last shift down. Sounds bad on the transmission. Also light bulb indicator on dash stays on when harness is plugged in.
Visitor, 1997 Toyota Camry, 50,000 mi
follow up on " 1997 Toyota Camry, 50,000 mi " - I found two broken wires after unwrapping a lot of tape. I replaced about 8" of wire with 12" in case there were other stress points neaby, for all four wires (ground is heavier gauge) and made a loop to reduce the stress from opening and closing the hood. I added some harness shroud and taped it up. Looks like it will work okay.
Visitor, 1993 Toyota Camry, 140,000 mi
broke at the trunk lid hinge. not enough slack in the harness. no fixed, need to solder in replacement wiring or find used harness.
not easy to remove!
Visitor, 1997 Toyota Camry, 50,000 mi
2001 and 2013, maybe also 2005 -- The wiring harness on this 1997 Toyota Camry failed at or near the trunk hinge junction in 2001 (about 50,000 miles at that time) due to flexing when the trunk is opened and closed. It blew fuses so there were NO rear lights. Toyota National paid about $170 for a local dealer to fix it. However, in 2013 a similar problem came back and there may have been an undocumented repair in 2005 too. The current symptom is that the lights mounted on the trunk sometimes go out - 1) sometimes when simply driving, and 2) usually when the trunk lid is raised (then they come on when it's lowered and closed). There are at least two broken wires as sometimes the license plate light will stay on even when the tail lights go out, and sometimes all will go out. I think it also affects the back-up lights. I looked at the harness when open and closed, and took pics. The way it was repaired left two likely stress points, one severe and one less so. Since Toyota won't fix this at their cost, I will attempt to open the harness, find the already broken wires, and check the other wires to see if they are about to go. It is not clear how to wire this to prevent recurrence without adding a long loop of wires to greatly reduce rotational and bending stresses (which should have been done in the first place). I notice that the trunk lid release cable housing shows stress where it is mounted there too, and it is a bit stressed when opening and closing the lid.
Visitor, 1992 Toyota Camry, 112,000 mi
Not sure if this is exactly the same problem I have.. sometimes my top rear light goes out and the bulb indicator comes on... but then... the light starts working again....this sometimes happen to my rear right turn light as well...
Visitor, 1992 Toyota Camry
lost backup lights and entire trunk hood lighting panel. Also, "defective bulb" indicator stays lighted
Visitor, 1993 Toyota Camry, 150,000 mi
taillights/reverse werent working, ended up butt connecting wires back together.
Took to dealer to have assessment of condition of car at 200,000 miles. Was notified that 3rd rear brake light along with left brake light was not working. Had lights replaced but would not stay on and afterwards the dash indicator showed that rear light needed attention. Someone had replaced the light cover on the rear left light wrong. After the cover was correctly aligned, the brake lights worked yet the indicator on the dash stays on.