The alternator sense fuse is located in the fusebox under the bonnet, on the plastic cover it is labeled as "ALT S".
There was a guy on another forum over the weekend who also said he did not have power at the alternator for the sense circuit and his fuse was not blown, so there might be a common problem in the harness somewhere.
Did you check for broken wires about and inch away from the alternator plug? it is common for for breaks to occur there.