Just got my MSD 8.5mm superconductors. Anyone know why there is 10 wires in the box. 8 plug wires + coil wire = 9. Is there just an extra or something that im missing.

 

There were two types of coils used in the 93-97 LT1 f-bodies, a single connector and a dual connector each of which used a different coil wire. The kit most likely includes both wires to make it compatible with all model years.