A motorcycle comprising: a handle; a top bridge to which the handle is fitted; a cable member having one end connected with the handle; and a harness support structure which comprises a cable bracket configured to fix a portion of the cable member and supported by the top bridge; an instrument bracket configured to support an instrument disposed forwardly of a vehicle body and fitted to the cable bracket; a holding portion configured to hold an intermediate portion of the cable member fixed to the cable bracket; and a regulating portion provided in at least one of the cable bracket and the instrument bracket and operable to inhibit a forward movement of the cable member at a position more distant from a handle side than from the holding portion; characterized in that the cable bracket includes a bracket main body (52, 53) connected with the top bridge, a projecting piece protruding from the bracket main body (52, 53) and a grommet member engaged by the projecting piece and made of a rubber; the projecting piece includes a first projecting piece, bent from an upper edge of the bracket main body (52, 53) in a front side, and a second projecting piece, bent from a lower edge of the bracket main body (52, 53) towards the front side; the grommet member includes an upper wall, a lower wall and a connecting wall connecting the upper and lower wall (63, 65) together, the grommet member representing a U-shaped configuration opening forwards; the upper and lower walls (63, 65) are formed with to-be-engaged grooves (63a, 65a) with which the first and second projecting pieces (68, 70) are engaged, respectively; and the cable member is held by the grommet member at a location closer to the handle side than to the holding portion. a handle; a top bridge to which the handle is fitted; a cable member having one end connected with the handle; and a harness support structure which comprises a cable bracket configured to fix a portion of the cable member and supported by the top bridge; an instrument bracket configured to support an instrument disposed forwardly of a vehicle body and fitted to the cable bracket; a holding portion configured to hold an intermediate portion of the cable member fixed to the cable bracket; and a regulating portion provided in at least one of the cable bracket and the instrument bracket and operable to inhibit a forward movement of the cable member at a position more distant from a handle side than from the holding portion; characterized in that the cable bracket includes a bracket main body (52, 53) connected with the top bridge, a projecting piece protruding from the bracket main body (52, 53) and a grommet member engaged by the projecting piece and made of a rubber; the projecting piece includes a first projecting piece, bent from an upper edge of the bracket main body (52, 53) in a front side, and a second projecting piece, bent from a lower edge of the bracket main body (52, 53) towards the front side; the grommet member includes an upper wall, a lower wall and a connecting wall connecting the upper and lower wall (63, 65) together, the grommet member representing a U-shaped configuration opening forwards; the upper and lower walls (63, 65) are formed with to-be-engaged grooves (63a, 65a) with which the first and second projecting pieces (68, 70) are engaged, respectively; and the cable member is held by the grommet member at a location closer to the handle side than to the holding portion.