Has anyone else experienced an intermittent bypass signal? Usually at boot up, the HU will either give me the parking brake error or not. This seems to signify if it detects the bypass or not. I'll test it by playing a movie while driving and it confirms that sometimes the bypass works and other times it doesn't.
I'm thinking there is a loose connection. However, I've got all grounds on a common ground so I know there is a good ground connection otherwise the HU as well as other modules I've got installed would not work. I've also buzzed out the wires at each termination so it would be odd