l am installing a GM GPS indash in my 2010 Chevy Silverado. The instructions call for the VSS wire to go into the #5 hole in the C1 adaptor in the back of the radio, and the voice recognation calls for the 2 wires coming from the C3 adaptor that comes from the onstar to the C1 adapror calls for 4 & 5. How do l put these 2 wires both in #5 hole? Please Help.

 

Please answer my question about the GPS hook up