Thought I'd share the journey with the aspiration it will help someone else one day. The tree of lights returned last week along with everything in the original post. Advisor said they felt it was in the "high speed network". He found a short in the connector to the abs module. He was able to wiggle the wiring harness and have the network go offline, which is what's happening when all those lights come on. He has re-pinned 4 of the pins that he feels is the cause of your issue, he has not been able to get the network to go offline after that. I don't have it back yet but hopefully this is the final trip for a while.