Ahh okay thanks Rob that makes it a lot clearer now! Ryan, here's something I nicked off a GT-R forum lol: "Installing a grounding kit is a safe and reliable way of creating a low resistance ground path. The kit provides direct ground paths from battery negative to body, chassis, and specific engine components to give a noticeable improvement in electrical circulation. Reduced electrical â??noiseâ? can improve ECU signals and throttle response resulting in better performance and reduction in flat spots, and you can see many more benefits associated with improved grounding such as increased bhp & torque, stabilised idle, brighter headlamps, quicker starting, reduced audio noise, reduced heater matrix/radiator core corrosion."