Fuse sizes

[my67c20]

Well i have searched found the color wiring diagrams reviewed them and now have fuse questions. This is a 67c20.

From the firewall i have 3 wires that previously were all hooked together with no fuses. I have a black (B), a black with white stripe (BW) and a red one(R). The BW has a thingy on it (pictured). What is it and can it be replaced with a new style fuse? The R wire splits off and goes to the alternator (converted to internal regulator). By the color schematic i should have a fuse or fusible link in various locations. Can someone tell me what should be at F1, F2 and F3 as well as there values (per my sketch). Should anything be hooked up to the unsued spot on the starter? (sketch is viewed from the front). At the point were i can turn the key and try to strart this beast but do not want to watch it burn up before i can road test it. Thanks