Fits: 2007-2014 Toyota FJ Cruiser.
Three nuts per side, reached through an access panel in the rear side trim. The one step to read carefully is the wiring in Step 6.
Required Tools
- Ratchet
- 10mm socket
- Phillips screwdriver
- Plastic trim tool
Part 1: Remove the Factory Tail Lights
Step 1: Remove the Sill Plate
Open the rear door and use the screwdriver to take out the screws holding the trunk sill plate.
Step 2: Remove the Weather Seal and Side Panel
Pull the weather stripping back near the tail light, then gently pry the interior side access panel off with the trim tool.
Step 3: Remove the Mounting Nuts
Find the three 10mm nuts holding the tail light assembly and remove them with the socket.
Step 4: Pull the Tail Light Out
From outside the car, pull the assembly firmly straight back to release it from the body.
Step 5: Disconnect the Plugs
Twist out the bulb sockets or unplug the main harness connectors. If the new lamp does not include a reverse bulb, transfer the factory one over now.
Part 2: Install the New LED Tail Lights
Step 6: Wiring Connections
Connect the new tail light harness to the factory plugs.
Watch the polarity. Red goes to turn signal positive, black to ground. If a function does not light after everything is connected, plug the polarity adapter from the box between that 2-pin plug and the vehicle and try again.
Step 7: Fit and Secure
Line the new lamp up and push it into place, then refit the three 10mm nuts from inside.
Before any trim goes back on, switch the ignition on and test the running lights, brake lights, turn signals and reverse lights on both sides. Check that the turn signals are not hyperflashing.
Step 8: Reassemble the Trim
Refit the interior side panel, press the weather seal back into place, and screw the sill plate back down.
Common Issues and Solutions
Tail light does not turn on after installation. Check that the harness connectors are fully seated. Inspect the pins inside each connector; if any are bent, carefully straighten them with a small precision tool and reconnect securely. On this car, also try the polarity adapter from the box, as described in Step 6.
Swap test. If a tail light still does not work, swap the left and right units to find out whether the issue is the light itself or the vehicle wiring.
Condensation inside the tail light. Temperature differences can cause light condensation, which is normal. Once the light has been on for a while and the internal temperature stabilizes, the moisture clears on its own. It does not affect brightness, performance, or lifespan.
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