The 2007 CR-V uses a common ground system from the factory? Fortunately, Honda uses an isolated ground system, meaning each speaker has a dedicated positive and negative wire. Never mix them.
| Function | Wire Color | Note | | :--- | :--- | :--- | | | White / Blue | Keeps your clock and presets saved. | | Switched 12V+ (Accessory) | Red / Black | Turns on the radio when the key is turned. | | Ground (GND) | Black | The most important wire. Don't skip it. | | Illumination | Red / Blue | Dims the radio when you turn on headlights. | | Antenna Remote | Blue / White | Turns on the factory antenna amplifier. | 2007 Honda Crv Stereo Wiring Diagram