DUAL XDVD269BT in 2009 A4 B7. No power.

[shoalsgary]

I installed the DUAL in my A4 B7 Cabrio. It had the facory GPS unit with dead button and no backup camera. I used an adaptor cable that required splicing. The unit is not powering on. I suspect is has something to do with with two unused brown wires from the chassis, CAn A and CAN B. I hve ni dea what to do with them. And there are two connectors from the chassis which don't plug into the adaptor harness. HELP!