I will be fitting an Alpine HU at the weekend and having removed the oem Philips I notice that the aerial connector from the car isn't the same size diameter as the Alpine connector !? Can anyone advise me what aerial adaptor I'm after and where I can get one....is a trip to Halford required

 

There's only two types of aerial connector, and every head unit I've had comes with an adaptor from one to the other. If yours doesn't, any ice shop can sell you one for about 99p.

 

Cheers for that - most helpful