I've removed the standard CAR400 radio/cassette head unit and the metal cage only to find a large black 3-way connector at the back of the cage.
My new head unit has different ISO connectors which only fit 2 of the 3-way connectors, but only one at a time and not both together.
What is the 3rd way for?
Do I need it?
Is this the harness adaptor I need to convert my Vauxhall loom to a modern ISO connector? http://www.incarexpress.co.uk/view_p...?partno=PC2854