I just installed a rear monitor (NESA NVM-7006) in my vehicle and got a male-to-male video adapter. I then hooked it up to the AVIC-D3 Rear Monitor Output cable. The problem now is the NESA is just showing a blue screen like no video supplied. I tried moving the video output between the NESA's video 1 / video 2 cables (switching the mode correspondingly). I am still not getting any picture. Is there anything I need to do on the AVIC-D3 to enable the rear monitor output?