Lighting Systems: General Description: Precautions

Before disassembling or reassembling parts, always disconnect battery ground cable. When replacing radio, control module, and other parts provided with memory functions, record memory contents before disconnecting the battery ground cable. Otherwise, the memory will be erased.
Reassemble in reverse order of disassembly, unless otherwise indicated.
Adjust parts to the given specifications.
Connect connectors and hoses securely during reassembly.
After reassembly, make sure functional parts operate smoothly.

WARNING:

Air bag system wiring harness is routed near electrical parts and switches. All air bag system wiring harnesses and connectors are yellow. Do not use electric test equipment on these circuits.
Be careful not to damage the air bag system wiring harness when servicing electrical parts and switches.