No, not really, you have to trust the measurements for the holes and then with the light clusters out you can reach the sensor wires really easily, I took the sensor cables through the rear central rubber grommet which lets the number plate lighting cable through. Once you're inside the rear load space, go left with the cabling after having taken the spare wheel cover out and you can lose the cable under the plastic trim. Let me know if you need to know anything else matey,