are both av's setup the same in settings, for example when you change pal and ntsc etc they are for the channel that your on at the time, so you could have one on NTSC and one on PAL

failing that, the video is only 2 wires, dont see how it can be scrambled in any way on one AV and not the other, unless theres a problem with the tuner. best bet is the settings

yea i tryed the settings for both and they are both on PAL and i have changed back and forth ect to try to dissrupt it into working to no avail at the moment

Have you another input to try, e.g. a video camera?
Most of them have the required 3-phono red/yellow/white output.

That's how I tested the AV input on my system before buying a DVB-T tuner (only part-fitted).

How did you get on with the retrofit?

I'm looking to fit reverse cam with the guideline things that swing with the steering.

I'm also wondering about interfacing a front facing cam that will switch to rear when reverse is selected but that's further down the line, one spy at a time.

Del

I have seen instructions on the net before. I seem to recall that if you have analogue TV (maybe digital too) and a certain revision of park distance control ECU, it just needs recoding and you get the automatic rear cam view and guidelines.