On my '12 both plug wires are zip tied to the exhaust valve line on the MAG side of the "T" fitting on the exhaust valve line. Well out of the way of rubbing on anything...
Maybe some routing changes had taken place...???
On my 11, the sled Fast Rider was talking about, they were routed and zip tied the same way. They were rubbing through against the Exhaust valve line that they were zip tied too though... So check it well where it contacts the exhaust valve line.