I have an olympus 3040, that I have been using for a while. I also use the ikelite housing and DS-125 strobe. For the life of me, I can't understand why ike (or any other manufacturers) did not allow a hardwired bulkhead to be connected to the camera, versus using the internal flash. It would have made perfect sense to use the external flash connector to save the camera's battery power - as well as do away with that crappy TTL issue.
So anyhow, has anyone done this? I've seen the addition of the USB connector for someone's camera - the only problem I can see possibly is lack of space. It may require modifications of the camera or something - not sure (I don't have the camera or housing in front of me).