Ok- Let me have a butchers in my car- I might have a parrot one floating around which you can adapt it- I'll tell you how.

Or I will have the correct thing for the job....

What you need is an ISO audio lead.

Will cost your about £20 if you source it yourself.

Give me a day or so and I'll pm you- I'm not in the mood right now to go and rumage around the boot of my car.

Jake