Only need to connect the monitor power wire:

Red wire to car positive,
Black wire to GND,
Green/Blue wire to reversing gear trigger + (or No need to connect)
The 4Pin Aviation cable Already build with the video and power
No need to connect power cable for camera.
Simple to install and easy to use

This rear view Mirror camera monitor system is support reversing used or permanently used
Best for Long RV Bus Truck Trailer Camper 5th Wheels Motorhome Schoolbus Tractor and all of Heavy Duty

7 inch CAR TFT LCD MONITOR DC 12V-24V

Display Size:7.0 Inch
Resolution :800*480
System :PAL/NTSC Auto
Power requirement:DC 12V-24V
Consumption:6W
Video:2 channel video input; V1/V2 switch,
Rear-view: V2 auto reverse when reversing gear trigger activated
Net Weight:Approx. 743g

Rear View Mirror Camera

Image sensor:7070 mirror image without Grid Lines
TV system : PAL
Lens: 2.8mm(120 View angle )
Number of pixels:720(H)*586(V)
Horizontal Resolution: 480 TV Lines
Scan frequency:50Hz-60Hz
S/N Ratio:≥48dB(AGC OFF)
Minimum illumination:0 LUX
Backlight compensation:Auto
White Balance:Auto Tracing
Auto Gain Control:Automatic
Night vision:Yes
Video Output:1.0Vp-p.1.5ω.4Pin Connector
Synchronous System:International Synchronization
work Temperature:-20°C~+60°C
Power Requirement: DC 12V-24V
Focal distances:30mm to infinite
Weight: Approx 300g
Waterproof:IP 68

Package included:

1 x 4Pin 7" Rearview Monitor
1 x Monitor Bracket
1 x Remote controller
1 x Monitor Power Video Harness Cable
2 x 4Pin Rear View Mirror Camera
1 X 4Pin 15M/49ft Cable
1 X 4Pin 20M/65ft Cable