Date registered: Dec 2005
Vehicle: 222.132 & 221.122 & 213.050 & 906.633
Mentioned: 5 Post(s)
Quoted: 58 Post(s)
I have not seen anyone having retrofitted the new NTG2.5 device but you are right that the wiring is at least pretty much the same as for the Audio 20 CD and this unit should fit better than for the others that use AGW.
You could have a look at the wiring diagrams and compare the connector pin assignments but it is very likely that all match.