11avalanche

Hi everyone. New to the forum. Just have a simple question, searched everywhere with no luck. I have a 2011 avalanche ltz with Bose. I am hooking up my subs and amp but kinda stumped on the line converter. Don't want to splice into the wrong wires so I am in need of a wiring diagram for the Bose amp in 2011 avalanche. And also what speakers should I splice into? The line converter has two terminals (2+,2-) so I will be splicing into 2 speakers. Thanks in advance. Any help is greatly appreciated.