[TXwaterdog]

I was thinking you could link the selector switch to your blinkers. It would be kind of cool to just flip on a blinker and have the correct camera selected. Back in 2003 I worked in a car audio shop. We installed video all the time. The biggest thing to think about when installing the cables is twist rate, extra slack and taping together all connectors. Zip tie cables to hold points before and after the door boot. If your cables are exposed to a section of metal or other sharp surface, wrap them in electrical tape. Also avoid running power lines along same side as AV lines. Run them on opposite sides of the car.

Aside from an indash camera, they make video monitors built into rear view mirrors. It's the best place for a camera like this. The screens are still quite big and very clear. I suggest looking into them. It's a natural place for the camera and it's not illegal in some states where dash monitors are. You can also feed video to watch sponge bob on the rear view, if you really want to.