A composite wiring comprising: elastic wiring comprising an elastic tube, a conductor wire disposed inside the tube, and first and second fixing portions that fix the conductor wire and the tube together at first and second ends of the tube, respectively, in the lengthwise direction thereof, the length of the conductor wire between the first and second fixing portions when the tube is in an unextended state being longer than the length of the tube between the first and second fixing portions; other wiring separate from the elastic wiring; and a connection member that connects the conductor wire of the elastic wiring and a conductor wire of the other wiring at the first fixing portion by caulking in a state of being brought into contact with each other, the connection member having an interior section sealed in a watertight manner with a sealing material, characterized in that the second fixing portion includes a caulking member made of metal, comprising: a male member comprising a first flat plate portion and a fitting convex portion that is provided on the first flat plate portion; and a female member comprising a second flat plate portion, a protrusion formed on a central portion of the second flat plate portion and a fitting concave portion that is provided on the protrusion of the second flat plate portion, wherein, in a state of the fitting convex portion and the fitting concave portion being fitted together, the conductor wire and the tube are caulked by the first flat plate portion and the second flat plate portion. elastic wiring comprising an elastic tube, a conductor wire disposed inside the tube, and first and second fixing portions that fix the conductor wire and the tube together at first and second ends of the tube, respectively, in the lengthwise direction thereof, the length of the conductor wire between the first and second fixing portions when the tube is in an unextended state being longer than the length of the tube between the first and second fixing portions; other wiring separate from the elastic wiring; and a connection member that connects the conductor wire of the elastic wiring and a conductor wire of the other wiring at the first fixing portion by caulking in a state of being brought into contact with each other, the connection member having an interior section sealed in a watertight manner with a sealing material, characterized in that the second fixing portion includes a caulking member made of metal, comprising: a male member comprising a first flat plate portion and a fitting convex portion that is provided on the first flat plate portion; and a female member comprising a second flat plate portion, a protrusion formed on a central portion of the second flat plate portion and a fitting concave portion that is provided on the protrusion of the second flat plate portion, wherein, in a state of the fitting convex portion and the fitting concave portion being fitted together, the conductor wire and the tube are caulked by the first flat plate portion and the second flat plate portion. a male member comprising a first flat plate portion and a fitting convex portion that is provided on the first flat plate portion; and a female member comprising a second flat plate portion, a protrusion formed on a central portion of the second flat plate portion and a fitting concave portion that is provided on the protrusion of the second flat plate portion, wherein, in a state of the fitting convex portion and the fitting concave portion being fitted together, the conductor wire and the tube are caulked by the first flat plate portion and the second flat plate portion.