Welcome back:
At this point, it sounds like there is a wiring issue within the fuse box or ignition switch. The only thing I can say is try to check for wiring issues around and under the fuse box itself. Something is shorted to power for the wipers and brake lights to come on.
I wish I had a better answer, but this is one that is going to require tracing wires between (I believe) the power distribution box and the ignition switch.
An interesting test would be to remove the fuse for the wipers and brake lights and see if they still turn on. If they do, then as mentioned, there is a short to power and they are getting power from a different source.
Let me know if I can help.
Joe
Monday, February 1st, 2021 AT 12:07 PM
(Merged)