3.Plug the FM Extender Cable into the FM OUT connector of your Stiletto vehicle dock. (Figure 24)
FM OUT 
From FM Extender Cable
Figure 24
4.Tune your vehicle’s FM radio and your Stiletto to the same FM channel (Figure 25):
a.Turn off your Stiletto and tune through the FM channels on your vehicle’s FM radio to locate an FM channel that is not broadcasting in your area. If you use an FM channel that is being used by a local broadcaster, it will interfere with the performance of your SIRIUS radio. Once you have located an FM channel that is not broadcasting in your area, save it as a preset on your vehicle radio. This will become your SIRIUS preset.
90.1
Figure 25