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Replacing my car stereo


Standard Member
Im looking to replace my standard fitted car stereo in my 2001 Ford Focus.
I have a Sony unit which i had fitted in my old car and now want to use again.
However when i originally fitted this unit into my old car i suffered from poor radio reception.
Does a unit need to be 'grounded' or 'earthed' when fitted into a car?
Ive taken this advice from another website:

I changed out the stereo in my old Focus a few years ago. You need two bits of kit, a fascia adapter and a loom kit, and you can also buy an adapter to make the remote work. The facia adapter
Connects2 Ford Escort / Transit / Fiesta / Focus / Mondeo / Puma facia adapter ( FP-07-00 ) - CT24FD01 - FP-07-00 from Connects2
clips into the large hole left by the old stereo and has a standard 1 DIN size slot to receive an aftermarket stereo.

There is a standard ISO socket that you use to plug stereos into power, speakers etc. in the car, but car manufacturers usually have their own proprietary connectors. You need to either buy an adapter cable
Connects2 Ford Mondeo / Fiesta / Fusion / Focus C-Max / Focus S-Max Adaptor Lead ( PC2-84-4 ) - CT20FD05 / PC2-84-4 from Connects2
or start butchering up your car's wiring.

If you want your factory fit steering wheel remote to work with the new stereo you need a loom adapter for this also. This will be specific to the stereo manufacturer and the Focus.

Any help would be greatly appreciated.

Many thanks

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