Finally found the info I have been looking for. Obviously the access rates for TOPIX vary according to the recency of the model, the newer the more expensive.
The brake controller connector is located up above the brake pedals. Just need to find out the plug to suit and should be fairly straight forward.
Here is the image but the link might display a little clearer.
https://www.aulro.com/afvb/images/im...016/08/153.jpg
https://www.flickr.com/photos/639420...dateposted-ff/

