Hongdian H3324 4CH HDD MDVR - Manual (Page 21)

2 -11
The black plug shall connect MDVR and then fasten it.
AV IN1-AV IN4, every cable has two interfaces and two power cables:
AV_OUT interface Line sequence
No. Label Color Instruction
1 ACC Red 12V “+”
2 Video Yellow VIDEO IN to connect camera or analog video
Signal cable.
3 GND black GND is to connect ground
4 Audio White AUDIO IN to connect sound pickup
12V and GND are to supply power for camera from MDVR.