Electrical nightmare and I am out of ideas

[cyrillink]

Not sure if you're aware of this site, but you can grab the Electrical Troubleshooting Manual for your car/year, which REALLY helps with troubleshooting:

http://www.wedophones.com/BMWManualsLead.htm

Save a copy in case the site dissapears.

Appreciate it, I just saved it.
Going old skool lol, go to fedex and printing it.
Thank you!

[cyrillink]

3rd brake light eh? Wouldn't have guessed that one.
I guess your hunch about something in the back of the car was correct.

It was the wildest thing!
When the car was off, no batt in the terminal.
I would do a OHM or close circuit test (beeping) on the multimeter it would ring.
when i pulled the disconnected everything in the engine bay, the beeping was still going on.
Then I pulled relays, nothing would change.
Only when 6 8 10 were pulled i would get a drop, and it would stop beeping.
I wish i noticed the 3 prong clip for the 3rd brake earlier.
I pulled most of the wiring out and tested lead by lead from the tail lights.

Have a new issue, but i discovered the fix for it. also kinda stupid tbh.
My brake line going to the back needs to be changed. while looking for the issue replaced the entire clutch system. master, slave, hard line, both flex line.

[Panici]

It was the wildest thing!
...
I pulled most of the wiring out and tested lead by lead from the tail lights.

Good troubleshooting skills. Something people don't know how to do anymore!

while looking for the issue replaced the entire clutch system. master, slave, hard line, both flex line.

On the plus side, your entire clutch system is now fresh!