I recently got a Thrustmaster Formula T2 setup, that includes the wheel, pedals and an adapter.
It appears I can just plug the wheel into the pedals, and the Y-split cable on the pedals connects to both the wheel and the gameport on my PC. I couldn't see any need for the male-female Thrustmaster-branded adapter that comes with it.
But, after looking online, I first found this notice from June 97 then, later this notice from January 97 over at Thrustmaster.com.

The January notice does mention that the converter/adapter is needed for older wheels (which mine is - both the pedals and wheel are exactly the same date, 961004) for setting up in Windows 95 only. However, the later notice does not, meaning it could be needed for any kind of setup, even with MS-DOS.

- Is the adapter required for either MS-DOS 6.22 or Windows 95?
- Without a manual, I'm not sure what the correct setup is. How should the adapter, wheel and pedals be connected?
- Has anyone else had any experience with using the adapter?
- Is there any Thrustmaster software available for this wheel, like there is for the flight sticks?