On this parts fiche the Blade Fuse 10a is the most specified component.
Parts such as the Wire Harness/ Ignition Coil: Cushion,cdi Unit, Susp,winker Relay, Unit Comp,cdi, Relay Comp.start are included in the Cb250 2004 (4) Hong Kong Wire Harness/ Ignition Coil parts fiche.
The lowest price component in this Wire Harness/ Ignition Coil parts-list fiche is the Screw-washer,4x16.