Lock housing in steering column
 

Seems that mine quit functioning, fortunately stuck in ON. So I unplug the IP and disconnect the batteries to shut down. Lock cylinder replacement did not correct the problem. I suspect the Steering Column Lock Housing. Local parts house does not carry.
Is the housing for diesels different than those on a gasser?
All I can find on line is EOTZ-3D505-A Which says its for tilt-wheel columns.
My truck has a non-adjustable column, does it require specific lock housing?
Any help or info is appreciated. Thanks!

Maybe it's time to run a main power switch and a GP switch to the cab?