side view cameras

oops.. try another idea

the wire there is only (1) flasher for the turn signals, and one Hot wire inside the collum
the wires coming out and going to each side (right-left) blink/power on off from the flasher

do you want your camera signal/picture going blinking on off

you will need manual switch form a separate hot source
or get fancy using a separate hot source and 'latching relays' that come on when the turn signal for that side is activated, then time out after your turn

Thanks for the input. That confirms one assumption. I do realize that hooking up past the thermal flasher will cause the screen to turn on and off in sync with the flasher; what I don't understand is, when the signal arm is pushed up or down (rt or lt) how does the circuit know which side to activate, if, as you say, there is only one wire coming from the column?
My next assumption is that there are two wires coming from the turn signal arm at the steering column to the thermal flasher. I just cant figure which two...

there are 2 wires coming out of the column. left and right. the flasher is wired on the power wire going into the column, and works with both/either.

I'm not real sure how the side camera inputs work tho. perhaps they have a delay?

Can't help with the wiring, but on my in dash display unit it has a delay that keeps the cameras on while the blinkers are flashing.
Maybe yours does too.
do you have a manual on the display unit?

I do not understand why you would want side view cameras set up to accommodate flashing but rest assured that I will keep my window drapes closed

For my side view cameras, I just tied into the hot wire going to the left and right turn signals. These wires were easily located under the front end and they fed right through the firewall to the camera signal wires.

Make both camera come on at the same time. Just wire before the flasher.

The NORMAL install on Rearview with side Cameras is this----The dash monitor electronics has a relay diode system internal that when the left or right turn signals engage, it sees this 12 volt signal and once it sees this it turns on the appropriate camera as long as it sees this pulsed 12 volt signal. Electronically, it KNOWS to keep the power to each camera ON continously and ignore the constat flash of 12 volt on and off. IF you have the original back up system, that did not have left and Right Camera capability, you cannot make the system work correctly. Doug

Lots of good input (except maybe the flashing part and the closing of curtains - you won't know what you are missing).
I obtained the GM P32/42 Chassis manual and although it doesn't clearly specify, there does appear to be two wires that come out of the turn signal switch at the column in the schematics. That will be where I start and then if RearView Safety returns my message I will know if they have a built in delay so that it I will be able to connect directly to the signal side (after the thermal flasher). In their install manual it simply says to connect to the rt and lt wires with the yellow and the white, respectively.

If you look at your schematic I think you will find that the flasher is before the turn signal switch and that's how the proper ts light is determined. It's also why using any input from the flasher for on/off short of a trigger for a latching relay won't work.

Why not a switch? I'm almost always in the right lane, if I need to look at something the mirror won't show it would be to the left for a lane change. I would rather the camera be on all the time. Or leave both cameras on constantly with two monitors, they're not that expensive.