Found a diagram showing this at the bottom of the radiator (LH) - but not sure what needs to be stripped back to get there. Cannot get a visual on it with the under body shield off. Seems like go in through the passenger wheel arch may be, or behind headlight? Why place the ground for the negative to chassis in such an inaccessible place ?! Any advice - to save me going the long way ??? Or the wrong way?

Any assistance much appreciated.