No question you have electrical issues but the problem is you have about 2 miles of wiring in that vehicle and hundreds of connectors. More than likely you have water in a connector but the only way to figure it out is to monitor the bus voltage and start unhooking them to see when the voltage returns. Then you either unhooked the problem connector or it was down stream of this one.
The wipers and headlights staying on is a safety default when you lose the bus network because these components are commanded on via the bus and if this is down then you may not be able to turn them on when you need them so they are just defaulted on.
You are on the right path with unhooking connectors but again, you need to monitor the bus voltage while doing it so you know if you made a difference.
Let me know if you have questions. Thanks
Sunday, October 20th, 2019 AT 7:32 PM