If anyone could help me figure this one out I'll be gladly appreciated I got a head unit out of a 2014 up to a 2017 either Nissan Versa Note hatchback or a Nissan Sentra I got the whole radio whole head unit navigation CD player all that have Bluetooth and have all the wiring connectors I found out only three wires so far that it will power up but I can't get any sound is there any other wire that I need to have power to or ground out so I can get sound I don't know so anyone can help me very thankful love to install it in my 97 Nissan Maxima As of right now Sunday the what day is it June 24th Sunday I got to put brakes on her 279000 and some change about this car about a year-and-a-half ago from my boss from the tow yard $675 and she had like 241000 when i got her