The plastic piece is not a tumbler. Maybe the just worded it wrong. That is really a switch that directs voltage to which ever circuit needs it according to the position of the key. (Acc, On, Start) It's quite possible you'll need one or the other, not both. If the key is hard to turn, then it's the lock cylinder (tumbler). If it won't start, or acc won't come on, then it's the switch.
Monday, December 27th, 2010 AT 11:54 PM