Just got an 85 Series 1 STi, and the central locking decided to stop working after a couple of days. The rest of the accessories on the circuit seem to be working. Looking at the Haynes manual, there appears to be an in-line fuse which I think may have broken. Does anyone know where it is?

If there isnt one, what else could be the problem? I've checked the electronic components and swapped them for ones out of other cars - no change, and so I think the issue is the power supply to the central locking