OEM-1 premium sound system interface, which allows quick connection of an aftermarket receiver (or an additional amplifier) to the GM Bose system, without the need to cut wiring
OS-1 adapter, which allows the use of the OnStar system with an aftermarket receiver. The OS-1 has on-board switching and built-in amplification that allows audio from the OnStar system to play through the two front speakers (factory or replacement) when OnStar is active, while muting the replacement radio.
Dimensions: 4-13/16 W x 1-1/16 H x 2 D
The OS-1 can also send OnStar audio to an external set of speakers if desired. There are separate right and left gain controls for OnStar audio, and an LED indicator that turns on when the OS-1 receives an 'On' command from the OnStar® system. Important Note: The OS-1 BOSE kit will interface with GM Delco/Bose radios that do NOT have the
