About this item . Please select the right pins configuration and suitable length (4pin: 23ft, 33ft, 49ft, 65ft). . Please note that if the car's power supply is 24V, you need to install a DC 24v to 12v Step Down Converter when connecting the red cord to the reverse light. . If you need to continue to extend this cable, please search for a suitable extra extension cable. Please note that long cords will lead to voltage drop, so the 4 pin cord can be extended to 100 ft at maximum, and the 5 pin cord can be extended to 40 ft at maximum. . Before installing this cord, please first test whether this cord fits your camera. Product dimensions: 8.6 x 4 x 3.4 inches.