after speaking with the lad who made/sold them he sent me pics of it for me to make my own, i used thick cable with solder at joints and proper connectors, all covered over with insulating tape.
the job was done properly, no twisting wire and taping it, but i didnt really notice a big difference, i kept the earthing kit when i sold the ctr, but havent got round to fitting it on the dc5, not too sure whether im gonna as i have no electrical problems at all, windows go up nicely etc...