I have searched for almost an hour and found nothing. If someone could help me it would be amazing.

I am installing an after market gps DVD player with a standard iso plug. I bought an iso adapter for my 2007 H3 and everything works except there is no sound coming from the speakers. There is one wire in the adapter that is not connected to my head unit as it is not part of the iso configuration. It says Radio Mute on it. I have checked the wiring diagram and found it to be the radio mute wire. Does any body know what i need to do with this wire to make the speakers work.

Regards Wadi.

P.S I have just joined and if i searched incorrectly please tell me where i can get the help I need.

 

117 views and nothing.

 

My best guess would be a problem with your amp power-on wire (i think it's blue on most headunits). If you have a factory subwoofer, you have to connect that wire in order for your factory amplifier to turn on.

No amp wire=no amp= no power to the speakers.

I have done three head unit installs on two different H3's and I don't think I've ever connected the "mute" wire. I believe the purpose of the mute wire is to mute whatever you're listening to when you're using OnStar or using a factory phone connection.

What wiring harness did you use? Axxess GMOS-04?