The most reasonably priced component used on the Nsr125f 1990 (l) Spain / Kph Wire Harness is the Bolt,hex.,5x20.
Some items from this specific schematic: Case,fuse(15a), Susp,winker,relay, Rectifier,silicon, Fuse,15a.
With a quantity of two pieces, the Fuse,15a is the most used part in the WIRE HARNESS diagram.