Does anyone know where the rear speaker wires go to on a 2007 Ducato van? I have converted the van to a camper and am putting speakers in the back. The connector to the radio has the rear speaker ports populated with wires but I can't find were they go to.

I have the same question for my 2011 Ducato.
I used the wiring diagram to narrow my search to connector "D235" which is "floating" under the dash somewhere. This is the connector used to hook up the rear speakers on minibus vertions etc. I think the wire colours are White+Red, White+Green and Light blue+Red, Light blue+Black. Saying that, I have yet to find it on mine.