Steps I've taken:
I've set up the Application links between Fisheye+Crucible and Confluence.
I've added the link between a Crucible project and a Confluence Space.
I've added Confluence as a repository under the Confluence LightSCM Plugin in Fisheye.
When I try to access the wiki repository when adding content to a review it says Wiki (not available)
Our environment is accessed through an externally available url using an authentication mechanism that blocks Atlassian products from talking to each other. For example, we have www.company.com/fecru and www.company.com/confluence but they cannot talk to each other with those URLs. Instead they use the internal ULR intranet.com/confluence and intranet.com/fecru.