Ignition switch terminal connection diagram: 1 - switch contact group (castle) ignition (0 - "turned off"; I - "included"; II - "starter"); 2 - backlight; 3 - microswitch; 4 - wiring harness block
The lock body is attached to the steering column with four special bolts with detachable heads. At a certain tightening torque of the bolts, the heads come off, and after that it becomes impossible to unscrew the bolts with wrenches.
The ignition lock is additionally equipped with a steering shaft lock mechanism. After removing the key from the lock, the spring-loaded latch is released. When you try to turn the steering wheel latch fixes the steering shaft from turning.