36 ford sedan rear lights not switching off

[Pompeyboy11]

I had an isse a while ago with the lights and with help on here it was fixed. I now have an issue with the rear lights not switching off regardless of the switch position on wheel. I have had all the switch assy out and cleaned and refitted at the base of the steering rod yet still it persists. The wiring is good and I suspect renewed at some point. I was thinking maybe the switch plate itself has a short. I wonder if anyone else has had this issue before I order any parts.
Al