A blue/white wire is often present for an electric aerial feed. If the radio doesn't power off correctly, some installers suggest leaving certain auxiliary wires (like the white/blue) open rather than joining them to the main loom.
When installing into a classic Peugeot, the wiring can be unique: clarion pu-9469a
While modest by modern standards, the PU-9469A was a high-tier unit for its time: A blue/white wire is often present for an
Typically uses a color-coded harness (e.g., White/Red for Left Front +, Brown/Red for Right Front +). Collectors' Market and Restoration Collectors' Market and Restoration If the display shows
If the display shows four static numbers, the unit is locked due to too many failed attempts. You must leave the radio switched on for up to three hours until the screen clears before attempting again. 2. Wiring and Installation
Requires a constant 12V (Battery) and a switched 12V (Ignition).