I run the speedo cable. I do because it is there and never felt like removing it. I also have the E-brake. I kept it for occasions in paddock to let it idle on gentle angle. Well one day I left it on during a session. It did not work very well after that, but I have never bothered to remove it.

i'm building the cage myself took a couple of pics off the net and trying my own ideas at the same time thanks for the help.