They are marked on your main map by a small green dot and on the mini-map with the green fuse icon. Five fuses will be automatically added to Lincoln's inventory during Thicker Than Blood and John Donovan will give him another three in The Way of Flesh.
- There are 555 fuses spread throughout New Bordeaux and Sinclair Parish, counting the eight given to Lincoln. 276 of them will be needed to wiretap all junction boxes, leaving 279 extra.
- Even when wiretapped, there are some fuses that do not show on the map until you're right by them.