For a standard installation, match these wire colors to your vehicle's harness:

: Detailed board-level schematics and parts lists are available through technical repositories like Elektrotanya .

Are you or installing this in a new project ? I can help you find the specific vehicle-specific adapter if you tell me your car's make and year . How to Install a Pioneer Radio and its Wiring Diagram

: System Remote Control. Used to trigger external amplifiers or a power antenna. Speaker Channels Speaker Location Positive (+) Negative (-) Front Left White / Black Stripe Front Right Gray / Black Stripe Rear Left Green / Black Stripe Rear Right Purple / Black Stripe Technical Resources

Pioneer DEH-P2500R uses a standard Pioneer 16-pin wiring harness. You can download the official Pioneer DEH-P2500R Service Manual for full circuit schematics. Wiring Harness Color Codes

: Chassis Ground. Connect to a clean, paint-free metal surface.

: Constant 12V (Battery/Memory). Provides power for the clock and radio presets.