Hello Dougcobb
Welcome to the ODK Forums.
I'm not an expert on these, but the ignition switch does seem to need that connection.
To help us out, we need the mower model number.
I take it, the photos are of the ignition switch?
Also, confirm that the issue is that the engine will not crank when you turn the key.
I guess you have ruled out starter motor failure?
We may have a electrical schematic if we get more info.
Hope this helps.
-----------------------------
JACK