So, I got 2 new batterys that fit well and are pretty lightweight, yet they are simply to high for the normal C5 Foot room. So i got rid of all of those light, tuning and hazard buttons and mounted them directly on the steering bar. Now the batterys fit. Also, I had to lay a load of new extensieon wires to the new steering buttons, yet all the work was totally worth it. The situations is much more chilled, as you can turn on the hazard lights, lights, flashers and the tuning light directly on the wheel, allowing you not having to jump around with your hands. I think its a great mod and I really recommend it to everyone. Heres a pic:
If you guys want any instructions or have any questions, simply comment. :-)
Yours, Jonatan