I want to add dual backup cameras to my truck, 1 for the truck and 1 for the back of my travel trailer. My headunit only has 1 input though.

I plan to connect both cameras to the head unit by using an RCA piggyback cable. My plan is to only power up 1 camera at a time. Will this work?

Also I need a toggle/rocker switch with 3 positions: Off, On1, On2. What is the correct name ie. poles / throw etc.

I was planning on staying to rca, would I gain anthing by running BNC or downgrade the signal by running Coax?

 

there are also switch boxes for rca... and yes it will work.

 

x2 I've heard of this working before... good luck, Post pics if you can!!!

 

That's a great idea....post pics!