spark plug splicers arent the safest thing to use! just ask tommy!

cut the stock wires off completely. then take a drill bit the same diameter of the wire, mayb 1/4" i dont remember, and carefully drill out the old wire. it isnt that difficult. your drill bit wont bottom out. they left a decent size gap where bare wire was wadded up to make contact with the coil! a hot glue gun will keep the new wires in place. be sure to wad up bare wire just like the stock one was when you took it out!

or, you can upgrade your old worn out coils, and wires, lol