run the power down the right hand side of the car, if you pull the door seals off, the plastic trim will hook away from the body, put the wire down there until you get to the b piller, a which point youll reach the rear quatre cards, at this point thread the wire out the other side of the trim so it ends up in your passenger footwell, then tuck it under the quatre card until it reaches the rear seat, then just thread it under the back rest into the boot,
the ground wire is normally wired to the big bolts that hold the isofix bar down (thats the big lump of plastic/metal in the boot floor directly behind the rear seats, there should be some meaty bolts holding this down, earth wire goes there,
the blue remote wire needs to follow the same steps as the power wire, until the front footwell, at which point needs to be tucked under the dash to the rear of the headunit where it connects to a blue wire coming out of the unit,
the RCA cables need to follow the same route as the remote wire, however this NEEDS TO BE ON THE OTHER SIDE OF THE CAR, though it seems like alot more work, running the wires the same side can cause interfernce,
also ive found the best thing with the remote and rca cables, is tuck them into the door sills at the earliest point. (basically where the dash ends) this will make them almost completely invisible.
remember to splice a fuse into the power wire as close to the battery as possible,
unfortunatly thats all the info i provide as i own a ph1 clio,
and they have different firewalls and gromits to the engine bay, and a different layount behind the dash.
hope this helps.
