Power supply for Dice ipod interface with DSP?

[FelixTheCat]

I have the DICE ipod interface unit but it needs to take 12 Volt (switched and ground) supply from the trunk or somewhere near the rear console, as this is where I want to run the interface from.
Any ideas would be appreciated.
I don't have the six pin CDC power lead as the Business audio has DSP, so the harness just has the three pin plug in the trunk.
Thanks.

 

[FelixTheCat]

http://bavariansoundwerks.com/product-extras/BMW_iPod_Integration_Kit_Instructions_-_DICE_Z4_Roadster_With_Analog_DSP.pdf

Found the answer, I think....! Will give it a go tomorrow when it isn't raining.