does anyone know where this belong can't find a plug for it in the engine bay is this important found in one of my bags do i need it? please help.

 

that looks like relay/switch(whatever its called) for the day time running lights. I took mines out a long time ago. It goes to a plug that is under the abs lines that cross above the cruise control module area. Don't need it unless you want ur drls again.

 

^^correct