Part number or source for X5 video tuner harness extension?

[TxnBluDvl]

Hi all,
I'm in the process of installing a video tuner, and I have the standard cable, but it looks like it won't reach from where the nav is and where the video tuner is supposed to go next to the battery.

Nav-TV.com and NavonTv.com both reference an X5 extension harness, but I don't think either has these in stock anymore (I've heard NavonTV doesn't answer their phone anymore and Nav-TV says the entire product is out of stock). There's no part number and I can't seem to find it through my dealer.

Here are the link to the references:

http://www.navtv.com/bmw2.htm

http://www.tvonnav.com/bmwtvonnav.html

Does anyone have the part number or know where I can get one of these? Does anyone know how much it costs?

Thanks!