My drivers door never locked with the key when I purchased it, so last week i swapped the actuator from my parts truck (which I confirmed functions) over to my LX. After installing everything, the lock cylinder harness snapped off. Swapped that over from the LC (1999) in my LX (2005) today and the door still doesn't lock with the key or either electronic switch on the door. Still mechanically locks with the key slot. Only variables I could see is that either a) LC lock cylinder harness and lock cylinder provide an issue, b) LC actuator motor died after sitting for a year since the last time it was tested, c) fuse, harness or ECU issue.