Car wont start unless door is open

67Dart273 said
That is certainly one possibility. I would "rig" whatever, in order to "back probe" connectors while they are connected, clip leads, paper clips, probes, nails, etc etc. Use your imagination. Monitor key points to see what they are doing. Don't overcomplicate There are only so many outputs from the key switch, and if they are not "there" then
that is a problem

here are a few pics.

The second pic is interesting to me. One blue wire from the ignition module, one blue has no connection: pic below.

And another mystery blue wire in this junction somewhere.

they all lead to this wierd splice thing. Is this factory?