Instrument gremlins.

You can isolate eliminate that connection by tracing the wires back to the bulkhead connector and disconnecting that wire at the bulkhead connection.

Go here (if you have not done so already): http://www.mymopar.com/index.php?pid=28
and download your car's wiring diagram so you can have it for reference to find that wire and connection. If this does not do it, then you can progressively disconnect wires that go to the front and rear turn signals one step at a time 'til it stops or 'til all the wires are disconnected and you are left with the directional switch.

Visual inspections would also be a good idea. And it is good this is a fused circuit; you can 'fail test' it over and over.

No apologies needed to me! With not being there, it just takes a while to get all the info regurgitated.....