Okay so got some pics of my cable. All this was done by following Preee's guide
Internal cables unplugged from board
The wire with the X's and the wire with the rectangles were the ones de-soldered from the pins 14 and 6, May be different if you have a different cable!!
Then I soldered these to the middle two pins on the switch, the red wire and black wire connect to the L-CAN and H-CAN pins. The two white wires connect the switch to the original pins, 14 and 6.
I then cut a square hole just smaller than the switch in width, but correct size in hight.
Next I used a small file to create a grove in the plastic part of the switch.
This then slotted into the hole cut previously
Hope this helps