I just installed the d3 in a 2006 frontier nismo. I didnt hook up the VSS and the GPS seems fine. I grounded out the parking brake on the HU. I also moved the mute wire (can someone tell me what this does???). Before I connected the antena to the GPS it would play DVD's while moving, after I connected the antena wire it stopped playing DVD's while moving. Does the GPS sense that im moving now and prevent the DVD from working?? Does it realise it is bypassed? Please help. Also does anyone know to connect the VSS on this model? Please dont spare the detail. Thanks sooo much.