Sirius XM RAdio XM Onyx User Manual page 21

SUV: We recommend mounting the antenna at the rear of the roof as
shown.
Convertible: We recommend mounting the antenna at the leading edge
of the trunk as shown.
Pickup Truck: We recommend
mounting the antenna just above the
front windshield as shown.
IMPORTANT! Consult a professional installer if
your vehicle roof or hood is non-metallic (i.e.,
fiberglass), or you have difficulty finding a
location for your antenna.
2 Clean the surface of the selected mounting
location using the alcohol preparation pad
and let it dry thoroughly.
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