Comes out of the part of the harness that goes to the headlights, drops down right near the block heater on my truck.

Block heater plug, you can see the wire tube/conduit off to the right that goes to the plug in question:


Here is pic of the plug, it is blocked off and secured to the sheet metal behind the lights:


That connector isn't plugged in to anything. Fog lamps?

 

i believe that is the connector for DRL (daytime running lights). hopefully someone will confirm or discredit my theory

-cutts-

 

Times Two----X-2

 

X3^^^^^^^^^^

 

yep DRL module goes there

 

Thanks guys.