the DVD player is located in the center armrest, it has been having slight connections issues for about a year. Last weekend, it totally went out. We can put a DVD in and it looks like it is going to play, but then shuts off. Turn it back on, you think it is going to start, then shuts off again. We are thinking there is a short somewhere in the wiring from the armrest, since in the past when we open the arm rest, the screens can sometimes go out, but come back on when shutting it. We also have a speaker that has a short, it is the front driver side one, and a vent damper on the front passenger side that is not operating correctly unless the heat is on full blast and highest temp setting.

Are these issues all related?

I am thinking I need to replace the wiring from the DVD that goes through the armrest, but am having trouble locating the correct instructions on this site.
http://accessories.volvocars.com/en-...ll/all/all/all

I think I found the correct part which is below. Can you verify if this would be the correct part?
http://www.tascaparts.com/volvo/xc90...e=wire-harness

Thanks for any tips/suggests/instructions!