i got my trailtech vapour from http://www.trailtechproducts.co.uk/
If you tell him what bike you have he'll sort you a kit even if its not listed. I went and collected mine in person and got it VAT free
Green and black wire that feeds into rhe clocks. Cut it and earth it to the negative terminal of the battery. Full power then. For a X that is. Give it a pipe, upjet and free flowing filter and you will have nicr gains!