Superb interior lights

I have the interior light problem on my 2.0 Elegance (56 plate). I had the carpet up and the comfort module out. Carpet bone dry, comfort module bone dry as well. The wiring looks like it was only made yesterday. I also had a look at the multi-connector block on the LHS under the A pillar (what a nightmare that is). Everything looks perfect. So far I have found 5 of the crimped connections. 3 at the multi connector block. 1 on the loom which goes into the comfort module. 1 on the loom at the sill. Are there more of these which I have missed? I would add that the sleeving which covers these seems to be a clear heatshrink type stuff and I am very loathe to cut into it to see the actual copper. On my assumption that my interior light problem isn't the comfort module or these connectors, is there anything else which could be the cause?