I hope this may help some more.
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Ignition housing showing slide installed and lock block we remove in the mod in place in the window on the housing
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slide removed with the lock block we remove in the mod, Notice pin protruding from bottom of lock block.
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Slide and housing
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Slide in "ignition on" position with slide running under lock block
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Slide in "ignition off" position with lock block blocking in the down position keeping slide from being able to retract into housing. In this position the steering wheel is locked and the key won't turn because the lock block wont come up enough thus locking the slide in place