Sirius Satellite Radio 3SIR-GM1 manual SIRGM1C

Antenna (21’ cable) - Mount on Roof of Vehicle

Right-angle SMB Connector

Factory bus connector
(Headunit Side)
Factory GM Class-2 Radio	SIRGM1C
	GM COMPATIBLE
	SIRIUS SATELLITE RADIO TUNER
	SIRGM1C
T-Harness	Connector
Interface Cable

1-AMP ATC Fuse		Factory bus connector
		(Vehicle Side)
	Power Harness	Connect YELLOW wire to	the Battery
	with Filter
		Positive or other good	B+ source

OUT

FILTER & FUSE BOX

IN

1-AMP Fuse located inside noise filter

Connect Black wire to a solid Chassis Ground (as short as possible)

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
SIRGM1C.	9
SIRGM1C Installation Guide