Hello everyone,

I totaled my 07 S60 a couple of weeks back. But I was able to find another 07' with only 35,000 (verified) miles on it. So I am back in the S60 game. My first S60 had the HU-850 with the AUX input in the center console. The replacement car has the HU-850/Premium Sound package, but rolled of the assembly line earlier in the year before the the AUX input for the HU-850 was added.

I was able to pull that radio out and install it in my replacement S60. So now I have the HU-850 w/AUX input upgrade, but nowhere to plug in the 2.5mm jack. the connections on the back of either radio are identical, so where the center console jack was wired to is not obvious.

My question is, does anyone know where the AUX jack wiring went to?

I've read that the wiring went back to the HU via the 9-pin connector on the back. None of the pin-outs that I have seen specifically state "AUX input".

Any wiring diagrams or info would be very appreciated. I've used every search term I can think of, but nothing definitive has come up.

Thanks