Hi FLorian,
I have just asked the same question to Phil. Because both you and Phil had already worked a lot on the engine room bulkhead.
The manual has shown this figure, but even with an empty engine bay, I don't think the steering wheel rod can be inserted into the engine bay, when the Motion Module was on the way.

- FAMO-86c.jpg (76.7 KiB) Viewed 575 times
So what is the best position for the Motion Control Module?
Regards,
Lerh Chang