I recently purchased a NAV IV at a great price hoping i will be able to get it fully integrated into my Late 05 LTE. I'm trying to clear up whether or not anyone has successfully fully integrated a NAV IV onto an 05/06/07/08 LT? My understanding is the 09/10 came with the same wiring harness for the NAV III as the earlier years but with a cable included that would enable the NAV IV to be directly plug and play with the Comm II system. I believe but am not sure that the late model 05 and up bikes have the same Comm II system. if so then this BMW cable if available should/may allow NAV 4 direct connection. Does anyone know the part # for this cable or was it only available on the 9/10 and not sold otherwise? Checking on this with my local BMW dealer but no word back yet. I have an earlier post on the GPS Forum that suggests this but no actual word from anyone that they successfully did this. posting here to get a broad view more then just available on the GPS Forum. Thanks for any info! I did have the bike up for sale but decided that I was going to keep it so want to add in some other things to make it as good as possible!