Optional. If you want the radio buttons to light up with your headlights, connect to the dash light circuit (Green wire in most Toyotas). If not, leave it disconnected and tape the end.
Constant +12V Battery — preserves clock/radio presets Pin 5: Front Right Speaker (-) Pin 6: Front Left Speaker (-) Pin 7: Ground (-) The 6-Pin Connector (Rear Speakers) Toyota 08600 Radio Wiring Diagram
Left Rear (+) → Light Green (Pin 4) Left Rear (-) → Green/Black (Pin 11) Optional