The component with the lowest price in the SE-I - WIRE HARNESS 86 schematic is the Blade Fuse 10a.
A sample from the products for the Se-i - Wire Harness 86 include: Relay,light, Relay Comp.,light, Blade Fuse 10a, Relay Comp.(10a).
In this schematic the "Blade Fuse 10a" is used most often.