How to put in a ignition

The lock cylinder is inserted in the end of the housing opposite the ignition switch. The ignition key rotates the cylinder to 5 different detentes:
Accessory
Off (lock)
Unlock
On/Run
Start
REMOVAL
Disconnect negative cable from battery.
Place key cylinder in RUN position.
Through the hole in the lower shroud, depress lock cylinder retaining tab and remove key cylinder.
INSTALLATION
Install key in lock cylinder.
Turn key to run position (retaining tab on lock cylinder can be depressed).
Socket In Lock Cylinder Housing

The shaft at the end of the lock cylinder aligns with the socket in the end of the housing.
To align the socket with the lock cylinder, ensure the socket is in the Run position.
Align the lock cylinder with the grooves in the housing.
Slide the lock cylinder into the housing until the tab sticks through the opening in the housing.
Turn the key to the Off position. Remove the key.
Connect negative cable to battery