A wire is provided in a turn signal power cord drawn out from a turn signal indicator fixed to a front fork while achieving a good appearance. A turn signal indicator includes a lamp case housing a lamp, and a stay member coupled to the lamp case. The stay member includes an annular collar fitted around a circumference of a front fork shaft. A cord-housing groove is formed in an outer part of the annular collar. A turn signal power cord is drawn out from the lamp case to the annular collar through an arm part to the outside through the groove. The cord-housing groove is covered with a cover, which is formed integrally with a locking member that engages with a slot part of a top bridge, as an anti-rotation component of the apparatus.