I need some help in finding which pin(s) of the Diagnostic module to hookup to the generic OBDII connector.

So far I've found the following, put need help identifying which pins:

OBDII Generic Connector
1- Engine Control Module (N3/4), O2S 1 signal (which pin?)
4- Chassis Ground
5- Signal Ground
7- Diagnostic Module (which one?)
9- Engine Control Module (N3/4), O2S 2 signal (which pin?)
16- Battery Voltage, circuit 30z

Everthing else is showing not connected; is that correct?

Am I missing anything?

Thanks in advance,

:-) neil
1988 360TE AMG