An electrical component attachment structure for a two-wheeled motor vehicle includes a main frame supporting components of a vehicle body such as an engine, a center frame extending vertically behind the engine, and a pair of right and left seat rails detachably attached to the center frame, the seat rails being attached with a bracket which supports an electrical component, in which the bracket is formed in an approximate U-shape and is arranged with an opening section of the U-shape directed towards the front of the vehicle body, so that the bracket is configured to support the electrical component inside the approximate U-shape and to allow the electrical component to be taken out towards the front of the vehicle body from the opening section.