About this item . This is a 2.5mm male to 4 pin cable, 33 feet in length. Please kindly confirm the pin configuration of your device's connector and the cord length you need before ordering. . 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. . For additional extensions, please search for suitable extra extension cables. Please note that longer cords may lead to voltage drop: the 4 pin cord can be extended up to 100 ft, and the 5 pin cord can be extended up to 40 ft. . If you are unsure which cable you need, please feel free to reach out for assistance. Product dimensions: 7.56 x 5.63 x 1.26 inches.