Audiovox SIR-GM1 Installation Guide - Page 9

Antenna (21' cable) - Mount on Roof of Vehicle Right-angle SMB Connector Factory bus connector (Headunit Side) Factory GM Class-2 Radio T-Harness Interface Cable SIR-GM1 Connector 1-AMP ATC Fuse Factory bus connector (Vehicle Side) Power Harness with Filter FILTER & FUSE BOX IN Connect YELLOW wire to the Battery Positive or other good B+ source OUT 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 SIR-GM1. SIR-GM1 IOnpsetarlalatitoionnaGnduiIdnestallation Guide 99