Sirius Satellite Radio SIR-GM1 Installation Manual page 9

Antenna (21' cable) - Mount on
Roof of Vehicle
Factory GM Class-2 Radio
1-AMP ATC Fuse
1-AMP Fuse located
inside noise filter
NOTE: If your vehicle is equipped with a factory satellite radio tuner and you are using the
included 'T-harness interface cable' for installation, you must disconnect the factory satellite
radio tuner at the tuner box. Otherwise, operational errors will occur while using the SIR-GM1.
SIR-GM1 Installation Guide SIR-GM1 Operation and Installation Guide
Factory bus connector
(Headunit Side)
T-Harness
Interface Cable
Power Harness
with Filter
Right-angle SMB
Connector
Connect YELLOW wire to the Battery
Positive or other good B+ source
FILTER &
FUSE BOX
Connect Black wire to a
solid Chassis Ground
(as short as possible)
SIR-GM1
Connector
Factory bus connector
(Vehicle Side)
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