speed hawk diesil tuning box

hi everyone got for sale a speed hawk tuning box this was taken off my old sr yaris so the loom is for this car but you can get a loom to fit the skoda so im looking for £50.00 it comes with a on/off switch as you can see in the picture, there is a web site as well will tell you more.....http://www.bhpplus.co.uk/blog/32/speedhawk-tuning-box-vs-cheaper-options