If I recall right it was this one (the cable should be where arrows are)

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Borghi (Morgan dealer/importer for Italy) took care of everything. But it was not that long. Fixed in one or two weeks.
For sure it's coming from some other car and I can bet that being able to find the original source would be much cheaper.

2010 Violet Aero Supersports | 2012 Green Vantage S Roadster