BTW:
analog connection is simple, it consist of connecting the signal wire and the return/ground wire between the wideband controller and FS;
serial comms connection is also simple, it consists of connection a null-modem-serial-comms cable between the wideband controller and FS;
in both cases you have to enable the appropriate pids (analog EXT.AD1 or serial EXT.WO2xxx1, in V8 Scan&Tune software goto Devices).