Best place to tap power

[kaymm]

I need to tap power for a in-dash camera. I need +/- wires. Which would be the best place to get it from? The camera should turn on when I switch on the ignition. The camera is also connected to my 2din head unit. Would it be okay to splice into the head unit's power source or should I look else where?

[jayeh]

I need to tap power for a in-dash camera. I need +/- wires. Which would be the best place to get it from? The camera should turn on when I switch on the ignition. The camera is also connected to my 2din head unit. Would it be okay to splice into the head unit's power source or should I look else where?

I was going to do the same thing for my dash cam.

I'd use either the 12v outlet circuit or the radio, Toyota has a habit of combing them on one fuse but I'm not sure about this car.

[kaymm]

I actually have 2 cameras. A wireless rearview camera that is connected to the backup lights. It turn on when I switch to reverse.

http://www.yarisworld.com/forums/attachment.php?attachmentid=49497&stc=1&d=1357454482

The front view in-dash camera, I'm thinking the head unit's power line. I also need to power the receiver that gets the rearview wireless video signal. I'm thinking of using the HU power again?

There is a also a "back-con" wire which I assume is the line that detects the car is in reverse and switches to input for rearview camera. I guess I'll tap that into the reverse backup's positive line as well.

[jayeh]

A backup camera in a yaris hatchback? Why?

[kaymm]

Cause I can lol. I put a lot of useless sh*t in my car hehe.