i just bought a new mustang it has sirrus in the trunk mounted on passenger side above wheel
an extra wire harness is located back there with it any ideals what it may be?

 

What does it look like? What color wires? Pic?

 

Are you receiving sirius? check to see if it is actually plugged into the tuner.

 

Sirrus works great the small harness is pluged into sirrus the harness that is not pluged in has slots for 12 wires slot 8 is the only empty slot all the wires leading to the harness are defferent gauges and difeerent colors with two colors on each wire
wondering if its for another aux input i have shaker 500 the wires look like speaker wire it does match the passenger side rear speaker wire. i can only see the colors of the rear speakers.
thanks

 

any ideals of what the extra wire harnes is for?