sori mate i thought i had already posted this up when i was posting all the guides i had. took a quick look and found it, posted it up there.
dont think i used the guide myself, so long since i did the mod but i think i just took the dongle apart and unsolder the five pins in the middle to release the xbox port connection then i just cut the internal wires going into one of the controller hubs and soldered them to the dongle in exactly the same order. Its really easy to find wiring diagrams to help you but my way means i can not use the controller port anymore!
120gb hdd, vinyl magma skin, front lights, side strip lights, clear jewel mod with lights, ir dongle mod, hdd indicator. X3 with LCD many mods inc custom x3 jewel.