This is a Chassis harness that is located in the engine compartment and passes through the firewall on the drivers side to the inside of the cab.  This harness connects to the head lights, fuse box on drivers side, plugs into ABS module, horn, wiper washer motor, etc. This harness was removed from a 2007 Dodge Ram 1500.  

See picture of part number on 2nd picture to verify your part number before purchasing.  This harness was tested on a running and driving truck before removal.  

one of the head light turn signal connectors has broken lock tabs on it.  the connector will still plug in to the turbo signal bulb socket and function as designed.  

Harness is in good condition.