Has anyone tried fitting the factory Sirius in an 08 XJ?

More specifically I'm talking about the real factory unit that is integrated into the touch screen. I have access to the gateway module and the new sdars module. I can't figure out the wiring harness. Does a whole new entertainment harness have to be fitted or can you retrofit the current one?

Thanks.

 

I find myself in the same situation as the poster inquiring the possibility of adding the "factory installed" Sirius option with touchscreen access (not to be confused with the dealer version that resides where the ashtray sits).The idea being a seamless integration.

I would imagine it consist of maybe 3-4 pieces to make it all possible..... sdars, audio interface, wiring harness, and an antenna.

Has anyone attempted this with any success? I think my only real concern here is whether the existing car harness has all the necessary connectors pre-wired to accommodate said components.

Any thoughts?