Sony XT-100 DAB power lead

I've just bought a Sony XT-100 DAB receiver second-hand but it didn't
come with a power lead.

Only two connections are required (ground and 12V) to the 5-pin
connector. I've taken the lid off and all 5 pins have connections to
them, so I can't deduce which ones to use.

Can anyone tell me which pins on this are ground and 12V (I will be
finding out on Monday how much a lead will be but I could solder leads
permanently onto the unit to save buying a lead).
--

Peter Crighton
Email To: peter (at) p-cright.demon.co.uk