2 Antenna wires in 2SS
 

I'm installing an aftermarket Stereo unit in my 2SS and noticed that the OEM HU has 2 antenna wire connections:

1. one thick black (coax) cable with a black connector
2. one thinner black/brown cable with a brown connector

Questions:

1. Does anyone know which cable is for AM/FM - the one with the black or the one with the brown connector ?
2. Has anyone tried to use the other (XM) antenna wire as a GPS antenna (a simple convertor cable would allow to make that connection...)

Dont know the color, but one will go to the passenger side the is the XM and the 2nd will go to the driver side that is the AM/FM and goes all the way to the rear window.

Both wires go to the passenger side.....

here.

Update: the AM/FM is the thick black (coax) cable with the black connector.