IFixPlanes - not quite....
AMM 31-00-00
the two FWCs and the two SDACs are identical and are configured in such a way that all the master warnings and cautions are still operative in case of one FWC and/or SDAC failure.
For a more exact description, you have to infer the connections from what's in the Trouble Shooting Manual 31-53-00. The top globe of the Captain's MASTER CAUT is troubleshot with replacement of FWC 1 and for the lower globe replacement of FWC 2. Vice Versa for the CM2 station.