u/xjboonie

Hi - I just installed the GPX7A head unit in my 2012 Jeep Wrangler Unlimited with manual transmission, using the plug and play harness. Everything works except it doesn't recognize when I shift the jeep in to reverse. The camera does work and has power - was able to verify that, but the head unit never senses the transmission is in reverse. This jeep did not come with a factory camera. Do I need to connect the red trigger wire off the camera harness to the "+12V for backup camera" red wire, or something else? Thanks!