Q:

I have 2006 volvo v70 and I would like to upgrade my stereo from hu-650 to hu-850 the 6 cd changer could you please tell me what I need to make it work, do I need amplifier or any harness?

A:

Yes you may upgrade your stereo to hu-850 and yes you will need an amplifier which is mounted under the seat, also you will need extra harness volvo part number 3533717 which I can get you for $40, you may also need software download which cost around $100, hu-850 doesn’t need a code but your steering wheel controls might stop working after you install it.