Sirius XM RAdio Stratus 7 User Manual page 18

Vehicle Installation
3 Attach the vent mount to a heating/air conditioning vent in your vehicle .
Position the two tension springs A against a vent louver B . Then push the
vent mount into the vent, far enough so that the hooks C drop down and
hook the rear of the vent louver . Once you are sure that the hooks have
grasped a vent louver, the tension springs A will keep the vent mount
hooked to the louver .
PUSH
18
FM OUT
ANT
D
FM OUT
ANT
A B
C
HOOKED