Using this product is easy. First, locate the old sensor connector on your 2003 - 2018 Dodge Ram with a 24V 5.9L / 6.7L Cummins engine. Then, carefully remove the old connector and connect the new one with the 4.5' pigtail. Make sure to use the heat - sealable butt - style connectors properly to ensure a good connection. When handling, be gentle to avoid damaging the pigtail. For maintenance, keep it clean and dry. If you notice any issues, contact us within the 6 - month warranty period for a replacement part.