Renault Laguna, Year 2000 Radio Wiring Diagram

[annieigma]

Hi,
i have been searching the net for a wiring diagram for the above laguna,.
its the radio, granddaughter bought the car, then changed the radio, cut all the wires and rejoined to the bare ends that came with the radio. it works, but the radio FM crackles and fades, and she is wondering if the positive/negative speaker wires have been connected correctly ( would this cause the crackle, etc?) the blue tooth phone bit works fine, no crackles, as does the the USB port, plays back really well. or, could it just be a faulty radio? any ideas?
thanks,
annie.

[TWR]

Connection to your Aerial.

[tonyav]

As TWR says, also make sure the radio unit is ground properly.