Got an Alpine ILX w650 headunit in, and can't access most of the settings unless the "parking brake" is engaged. I can't just ground it, tried that already. From what I'm reading, it needs to see 12-volt power first and then ground...maybe? I'm not sure what I'm doing, how could I just bypass this? I don't want to mess with the parking brake, I'm not planning on watching movies or something while driving lol