The first step: removing the original vehicle license plate lights.
Step two: take good car --- 3 lines dedicated camera cable car guide:
1. A red, black and thick lines --- ----- camera then reversing lamp power supply (that is linked to reverse when the bright lights).
2. Yellow video line --- ---- video camera back then host video input (after reversing as the end of the V-IN).
3. Red camera license string lights --- ---- then the original power supply line license lights.
The third step: the test no problem, will be dedicated camera car fixed (according to your income in situ).