Wire Identification Basics
The door lock system in the 1999 Toyota Camry uses standardized wire colors for lock and unlock functions. Access the main driver-side door harness by removing the interior door panel. Confirm connections using a multimeter on continuity mode to avoid errors.
Specific Wire Colors
- Lock wire: Red with black stripe (12V positive signal for locking).
- Unlock wire: Green with white stripe (12V positive signal for unlocking).
- Ground reference: Black wire (common for circuit completion).
DIY Installation Steps
Disconnect the vehicle battery before handling wires. Splice into identified lines for aftermarket lock modules, ensuring secure connections with crimp connectors or solder. Avoid short circuits by taping exposed wires.
Safety Notes
Wear insulated gloves and eye protection. Test functionality after reassembly to confirm proper operation without draining the battery.
