[notout86]

“First off, My parking brake pin is shorted to ground. The backup camera harness does that. The H/U recognizes this if I go into the settings menu.

I was powering the video from another video source so that I'd be sure to have a solid video output connection. I'm not sure how I know if my H/U has this capability. My car has the standard 2013 BRZ Fujitsu Ten unit, so it may not be active.

I did get the reverse camera to work. I just can't get rid of the navigation lines.

Thanks for the links. I'll check them out later.

I'm a bit confused as to what harness you are looking for. Do you need the 28-pin connector/harness?
Also, If I understand correctly, this is what you would like the switch to do:

Pole 1-Camera 1 active. Reverse wire has +12V signal.
Off-Reverse wire only active in reverse. Camera 1 active.
Pole 2-Camera 2 active. Reverse wire has +12V signal.

Is this correct?”
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Brilliant prompt replies thanks.
Once you have checked the links I think you will know your h/u capabilities.

I believe from my reading that (and I quote) “no-one has found how to get rid of the navigation lines” and “in some countries the lines can be adjusted” and “some countries do not show them” like here in Australia. If you have DOUBLE lines, one set will be coming from the camera itself. My cameras have small wire loops. One is for the lines and the other reverses the image for use as a front camera. Cut or join them to enable/disable. Some people without the loops have opened up the camera and cut a wire inside. You may be able to get details from the seller or maker … good luck. Personally I have measured distances to objects on the lines in the view to calibrate like range-finders and get a better idea of how close I am. I can accurately give next door’s cat a dose of carbon monoxide from an exhaust pipe. I would not be without them.
If you open a camera, take the opportunity to check the seal and if necessary, ensure a waterproof seal e.g. with silicone rubber when closing.
I wonder too that if you could get your camera video via pin 13 or an AV pin you would not see the lines. They should not appear there or they would pollute pics or video from other inputs like via USB, DivX etc.

As for what harness I was looking for, I did not really know and simply ordered whichever one SVXdc the guru recommended and made it clear I wanted to add a front cam to an existing system with a rear. Perhaps the holdup from him is because he is experimenting with different methods. I have only read thankyous to him so I am confident whatever he suggests. I did gather along the way that he was going with the 28pin socket but believe he was thinking of one of the AV pins rather than pin 13. Perhaps he sees merit in the Y-video to 16pin method.

Sorry I cannot understand your switching description and what poles you mean. I would express the switching as:
We do not want either camera powered on permanently. 6V or 12V suits many and my cameras.
In reverse the REVERSE Camera is powered with 6V from pin 7. Reverse wire has +12V signal.
Off-Reverse wire only active in reverse. Neither camera is active.
When FRONT Camera is desired as powered, the switch in your post #26 supplies 6V . Reverse wire has +12V signal by switch or some method other than selecting reverse gear.

Do not fear responding as if to a 7-year-old child