Universal harness usages on below special head unit

1)Reverse camera connecting way :
without canbus system :
No.2 (CCD 12V ) +No.3 (Camera In )

Noted : if your car have canbus system , you do not need to connect the No.2 (CCD 12V )

2)No.21 and No.14 USB is used for USB driver / DVR / TPMS/DAB+/USB 4G dongle
3)For the No.22 USB/CP plug , it is used for update system / Z-link function (Iphone carplay/ Android Auto )

4)Harness connecting way for steering wheel control

A.If the harness with canbus box , you need to connect following cable :
Can in +can out

B.If the harness without the canbus box , you can connect following cable :
Can out + key

After connecting above harness , you need to learn the steering wheel control .
Noted : if your harness with canbus box , you do not need to learn the steering wheel control .

5)How to connect the after-market amplifier :

If you still have any other problems about above head unit , please kindly contact support@joyingauto.com or info@joyingauto.com  . we will help you .