This is a Genuine OE 29056-1 Adapter Harness Kit HB1 - Lights to Relay
This is the adapter for Dodge Sport.
The 3-port kits do not have a harness for the dual bulb sport trucks. What they do is use the HB5 harness 29050 and this adapter to split it for the HB5/HB1 combo lights. You get just what you see in the picture.