When is it legal to install a tracking device on former spouses car when going through a high-conflict custody case?

It certainly is an high-conflict case. You should pay for the advice.

Can I legally ban him from seeking custody?

The extraordinary, drastic remedy for termination of Dad's parental rights isn't remotely substantiated here. However, you shouldn't have to...

Do California Family courts (specifically Alameda county) follow Federal Rule of Evidence 801?

No, and it really doesn't matter. You need to follow California's rules as set forth in the Cal. Evidence Code.

What are the steps my best friend needs to take to ensure they win, and keep from the dog being put down?

I begin from a different mindset. One, your best friend's brother isn't posting and thus I don't see that he cares. Two, the dog's...

What is the likelihood of getting a court order to move and put child in private school

Poor likelihood under the current facts. Maybe more information will help you build a better case. Dad's views aren't yet articulated.

Take this up with your insurance carrier insofar as you have a claim under any coverage or any claim is made against your carrier. There were...

How can I enforce a stipulation that is part of my divorce judgment?

I don't practice bankruptcy law but it's apparent that you have a plan there. I have no comment on any remedy for you for her breach of that. You...

Can I get an order after hearing thrown out if the opposing attorney speaking was not the attorney of record on the matter?

The judge allowed it. Gamesmanship isn't helpful. Move on.

Did the therapist do the right thing? and What to do about the therapist?

I am appalled at what you represent the child's therapist having told the child. Your problems are greater than the therapist. Get a lawyer to...

What do I have to do legally to see and talk to them? Do I have to hire a lawyer in TN or CA?

I see no indication that Cal. is the home State for your children. You need a lawyer licensed to practice in Tenn.