[vilord]

For the OABR connections, I bought the socket and pins from pelican parts, like 30 bucks for two sockets and a dozen pins shipped.

OABR socket:
61139299610
OABR pins:
61139230105
pinout:
evo side:
2: ETH ATM RX-
4: ETH ATM RX+
8: ETH ATM S
17: ETH CODING TX+ to RJ45 pin 1 and/or OBD2 pin 12
18: ETH CODING RX+ to RJ45 pin 3 and/or OBD2 pin 3
19: ETH CODING TX- to RJ45 pin 2 and/or OBD2 pin 13
20: ETH CODING RX- to RJ45 pin 6 and/or OBD2 pin 11
atm side:
2 - ETH + to evo pin 4
3 - ETH S to evo pin 8
4 - ETH - to evo pin 2
7 - KCAN2 High to retrofit adapter KCAN2 lines
9 - KCAN2 Low to retrofit adapter KCAN2 lines
Passthrough mic, bmw assist:
15 - Mic + to head unit quadlock 17
16 - Mic - to head unit quadlock 22
17 - Mic S to head unit quadlock 33
18 - Mic S to microphone
19 - Mic - to microphone
20 - Mic + to microphone

i'm going to skip the passthrough mic connections on the ATM since i don't care about Assist, I'll just run the mic directly to the evo. Also because I only bought 14 pins, and I'd need 18 to include the mic passthrough.

Note that the ATM uses a 2-pin 100mbit ethernet connection that must be shielded.

As a note, finding all this info and mapping out the pinouts was many hours of research, pawing around on newTIS, realOEM, etc.
I have complete pinouts for the rest of the ATM and Evo connectors as well, if needed