Yes that six pin connector on the wiper stalks flying lead accepts only two wires from stalk itself connected to the resistive array within according to delay chosen, in turn applying varying voltage to the wiper delay relay "I" pin. Hopefully Paul's wiggling of wires cured the issue permanently but concerned it may occur again!
If a wiper stalk replacement is needed it should be relatively easy to remove/replace.
![[Linked Image]](https://i.imgur.com/i5Mk9pZ.jpg)
The stalk should just slide out once the securing screws to right are removed and retaining pip (just inboard of D shaped moulding) is eased. The ignition switch barrel shouldn't impede.