stereo fitting

Hi folks, was wondering if there are any wiring brainiacs out there who could lend a hand! I have a Vauxhall corsa C (2006), and I’ve recently bought a Sony Touch screen head unit. I’ve spent hours trying to identify the problem, but to no avail. I’ve bought a harness compatible with my car...

will this cage fit the cosa b? i know **** all about electrics, i tend to specialse in charming 5-0 not to give me speeding tickets which is bugger sll use as i only have a 1.0, anyway, this is what im looking at, thanks in advance :)...