I looked round and on the american site for a guide to put an earthing kit into my Hr and while there were a few for DE they were not suitable so i decided to just do it.  I used the Stillen install instructions as a base line but as they are american, the battery is on the wrong side so guessed really.  Not completely sure I've done it right but car starts so i don't think I've messed any thing up.  If anyone has any suggestions or can point out where i may have gone wrong please comment and le