I have a E36 shape BMW 316 Compact on a V Reg. Can anyone help with why the cnetral locking doesnt work?

I dont think it should have remote locking should it? If this is the case then even if i didnt have the remote the central locking should still activate when the drivers door is locked and unlocked with the key? Am i right?

We have replaced the control module that does the locking, windows and various other interior items but this didnt cure it.

Can anyone tell me what the wire colours should be for Lock and Unlock going into this box?

Any other help would be gratefully received.