Pioneer AVIC-F50BT - Manual (Page 15)

Black plate (15,1)
Violet/white (REVERSE GEAR SIGNAL INPUT)
This is connected so that the navigation system can detect
whether the vehicle is moving forwards or backwards.
Connect the violet/white lead to the lead whose voltage
changes when the reverse gear is engaged. Unless
connected, the sensor may not detect your vehicle
travelling forward/backward properly, and thus the position
of your vehicle detected by the sensor may be misaligned
from the actual position.
When you use a rear view camera, please make
sure to connect this lead. Otherwise you cannot
switch to the rear view camera picture.
The navigation unit
Power cord
Note
15
Engb
15
English
Section
02 Connecting the system