Just a bit more info on the modified loom supplied by Renault. It's actually just a new connector with wires hanging out ready to be spliced into the old loom. There's very little modification, just the live feed is shared across 2 terminals.
To access the resistor pack there is a hole to the right of the intruments, once the surround is removed. I'd be interested to see pics of models where this hole does not feature.
I presumed that all Scenic II's had the " hole " ?