like linear bodies made from copper or the like and are formed on the base plate portion 111 with some thickness and arrayed in parallel with each other at a predetermined pitch for example about 100 m the top sides of the conductive leads 151 are covered with an insulating layer 121 and the areas of the ends of the flat cable 101 have the insulating layer 121 is removed to expose surfaces of the conductive leads 151 the exposed portions of the conductive leads 151 at one end of the flat cable 101 lower end shown in fig1 function as counterpart terminals which contact the bent portions 68 c of the terminals 61 as shown in fig1 although the width of the conductive lead 151 provided on the outermost side the right side in the drawing in the array direction of the conductive leads 151 is shown wider than the width of the other conductive leads 151 the width of conductive lead 151 provided on the outermost side may be changed as appropriate and may be the same as the width of the other conductive leads 151 moreover in an area in the flat cable 101 with a predetermined length from both ends a reinforcing plate 113 is applied to the side opposite to the side where the conductive leads 151 are exposed in other words the back side of the base plate portion 111 note that the area where the reinforcing plate 113 is applied is set wider than the area where the conductive leads 151.