JVC KD-DV4200J Instructions Manual page 207

B
Connecting the parking brake wire /
When installing the monitor in a location where it can be seen by the driver
Parking brake
When installing the monitor in a location where it cannot be seen by the driver
Connect the parking brake wire to metallic body or chassis or the car.
C
Connecting the crimp connector /
Wire connecting the battery and the parking brake switch.
Attach the parking brake wire to this point.
D
Required connections for DVD playback /
KV-MR9010
9-INCH WIDESCREEN MONITOR (not supplied)
Parking brake switch (inside the car)
Video cord (not supplied)
Audio/video control amplifier or the decoder compatible with the
multichannel digital sources
Parking brake wire (light green)
Contact the metallic part of the crimp to the wires inside.
Digital optical cable (not supplied)
5
Parking brake wire (light green)
To metallic body or chassis of the car
*
3 Not supplied for this unit.
* 3
Pinch the crimp firmly.
DIGITAL OUT
See "About sounds reproduced
through the rear terminals."