- Mar 26, 2014
- Marshall County, Illinois
I recently purchased a 2012 Impala police car. I am installing 2 scanners in it. I found information in a manual that came from GM that you can connect aftermarket radio equipment to the car stereo speakers. After a little digging, I found the wires in the passenger/front foot well. It appears that these are correct. All the wire colors match up according to what is in the paperwork. However, when I connect the scanner output to these wires, I hear no audio from the scanner. I do hear audio from the car stereo though. Do I need to disconnect the stereo wiring at the stereo deck before I hook up the scanner to these wires? Or maybe something else... Thanks in advance for your input!