My wife has a 2007 Jeep Compass. The stock stereo stopped working one day. It had no power going to it. My wife's father is a mechanic at a car dealership. He's an older gentleman and isn't very savvy when it comes to modern electronics such as stereos. He tried to fix it for her. He ended up telling her the stereo was "burnt out" and she needed a new one. She was bummed out because the stereo didn't work. I bought her a new aftermarket stereo for her birthday and it came with the installation kit and the adapters and connectors. She asked her father if he could install it for her. He tried and couldn't get it to work. One of his coworkers looked at it and said he suspects there is a "bad wire" somewhere, possibly under the gear shifter? He bench-tested the original stereo and it still works! Where do we look for the "bad wire" ? How do we find it? They haven't been able to find it so far.