The chrome ring around the ignition key hole is attached by a single point. I am able to lift the ring like a hinge from the dash panel. I have carefully removed & inspected the dash panel front & backside.
There isn't a wire that attached to the chrome ring.
Does this support your previous comment to Eric "Otiswesty"?
As far as I can tell, there is no immobilizer on the 350GD. The wiring diagram doesn't seem to show any evidence thereof. If there is a key reader coil, it is only to re-synch the IR features of the key.
I have never been able to locate a K38 behind the instrument cluster.