Elongate bases (10) for guiding a movable end (37) of a conductor path (30). Cross sections taken through the bases substantially normal to the elongation directions of the bases are substantially identical to one another and substantially constant along the elongation direction of the bases. Thus, the bases (10) can be obtained by cutting an elongated raw material to a specified length in conformity with a vehicle type, thereby enabling a cost reduction. Further, since the bases (10) are symmetrical with a moving path of the movable end (37) located therebetween, it is sufficient to prepare only one kind of elongated raw material. In this respect as well, costs can be reduced.