There still is life around here.

I got a JVC head unit from Halfords just before Christmas and had it put in by them. They needed to order a antenna adapter to connect the radio to the Crossfire antenna. They couldn't find one so had the factory unit put back in and have not bothered about changing it since.

Let us know how Halfords sort yours out if you let them install it. You may have to hot-wire it yourself or get another audio shop to do it.