good news! I have figured out how to rout the cabling if any of you are interested? Please note however i only took brief pics along the way as i didn't intend on doing a tutorial but thought might be a good idea, This is my first tutorial ever! so may not be to good :/ but this is how i did it anyways, if you want to do this you self this is only a ruff guide not a step by step pro install just how i did it one evening and he or she thinking of doing this must be mechanical minded, good with electrics and aware that there will be some drilling into panels etc :/ if you still wish to give it a go hears a ruff idea..
Right to start with remove the armrest by popping the plastic cover off to reveal 3 studs, you will need a 10mm socket to remove the 3 nuts and the armrest will just pull up and out.
next remove the gear and handbrake gaiters (note these just pull off) the handbrake gaiter is easy but the gear gaiter is a little bit more complicated, 1st unscrew the gear knob (watch out for the spring underneath) having said that it is fairly large and will go back on either way
next grab the gaiter at the bottom and pull, the best way is to grab it from the side closest to the steering wheel and pull the base towards you (note; when i say base i mean underneath the leather gaiter you will feel its like a hard plastic that's what your trying to pull NOT the leather gaiter or you will rip it out) be careful and take your time with the gaiters as they are very stiff and those 6 plastic lugs are very easy to break/ snap off so be gentle but firm or you WILL break them
Right that's all you need to bee pulling off at this point.. so the usb, once you have removed to handbrake gaiter and plastic pull up thing for reverse you will be able to get your had under and locate the USB and Aux plug in, you will feel two little lugs push them in and pop it up from underneath DO NOT pull it up from the top.. Once out remove the black cover to expose the USB and Aux board as shown in picture 2
Now you need to make an adaptor for the Aux input.. i had a 3.5mm jack laying around, as you do lol. but if you don't play around with that sorta thing maplins will have one, you need to drill a slightly bigger hole in the black plastic cover and screw your new 3.5mm jack port into it thus still making this fully working.. you need to solder a new jack lead onto the back by cutting a jack lead in half stripping the wires and soldering it to your new jack port you have just mounted into the black plastic cover Please make sure you get the wires round the right way, there will be 3 pins in the back of the new port, often the one on the outside (pin 3) you will solder the earth or un sleeved wire onto and then pins one and two with the other two wires. the way to test which way to solder your wires is simple.. take your jack lead which you cut in half/ cut the end of or what ever, strip back the outer wire to reveal some non sleeved strands of silver wire (don't cut those off) and two sleeved wires mine were white and red.. strip a little sleeving of both wires back aswell. now connect your jack into the new jack socket and get a multi meeter out. set the meeter to buzz mode and hold one lead onto a wire and touch the other lead to a pin on the jack socket, when it buzzes you will then see which wires go to which pins. solder up and your good to go (if this isnt explained to well im sorry you can always ask a tech boffin at Maplins to show you a little bit better or Google something like how to wire a jack plug?) Once done it should now look like pictures 3 &4