I was looking in the engine bay today when changing ignition leads and noticed the 2 earth straps, one from above aircon rad to rocker cover, and one from body to gear box were looking worse for wear... now i know you can buy HKS earthing kits for €100 but i can go out and just as easily buy 8 gauge or 4 gauge cable and do my own, only question i have really is where do i want to earth from and too in the engine bay... anyone have a wiring diagram or that for one of these earthing kits, or w