Halo Automotive Premium 9007 Resistor Harness (Pair) One Set (2 pieces) of Plug and Play 50w 6Ohm Resistor Harnesses Adaptor. This Harness is required for 2003 to 2011 Dodge Ram 1500, 2500 and 3500 in order for your truck to operate the HID Kit. It will will ensure no error when installing HID conversion kit for 9004 or 9007 housings It is easy to plug and play pre-wire socket with both high or low beam error bypass load resistors Connect H13/9008 lamp