Originally Posted by TowPro
can I ask what your installing that needs Speed sense? I changed radios on my 2018 MBS, not a dynamax but its still a sprinter.
Sorry everyone, I didnít receive any emails saying I had responses to my post. My new stereo requires a connection to the vss to work with wireless CarPlay. Wireless CarPlay requires both gps and vss connection or it will not work when the vehicle is in motion. My instructions from crutchfield said I would have to access it behind the instrument cluster. The instructions said it would be a white wire located at pin 8. The only problem was that there was not a white wire and nothing connected to pin 8. After talking to customer service we took an educated guess that it was the blue and red wire located at pin 9. I tapped into that wire and everything is working perfectly. I hope this helps someone in the future. It is my guess that on a 2018 Isata on a 2017 Sprinter Chassis that the vss wire is located at the 18 pin connector behind the instrument cluster. The wire is red and blue located at pin 9. Crutchfield has excellent customer service.