rns-e retrofit question. wiring harness question

[dares_uk]

Hi

i know there is lots of stuff on here and the net,
and i have googled etc.. before posting, i couldnt find confirmation.


I have an 2005 b6 A4 cabriolet,
with bluetooth hands free, and BOSE.

I have purchased an RNSE, (not come yet)
and a glovebox cd changer.
it comes with a wiring harness, which looks like iso blocks,

but do i need this tyre of harness for the bose / bluetooth too work too ?
Audi Bluetooth SDS Wiring A3 A4 ► RNS-E Concert 8P1862335 8P0862335 8T0862335 | eBay

thanks