I hope this video explains well enough how to do this. If you have questions just ask!

 

Wow, nice! No harnesses. Just gotta make like a bomb technician and make sure I don't cut the wrong wire.

 

Haha simply find the color going to your reverse lights, then find the same color in your door rails. Test it by poking through the shielding with a multimeter and see if you get 12v when you put the car in reverse. If so, this is your wire. Then wire like I said, and if your reverse lights come on with the switch that means you have a second wire hiding on you.

 

I usually find directions easier to follow if I see them written down rather than hear them. Or simply have a schematic diagram; I don't need any text spoken or written.. With a good diagram there is no need for any explanation. The diagram alone should provide all the information you need. So I'm just looking at the schematic, hoping it will tell me everything I need to know, but I am not sure that it does. By the way I think the switch you are using is called a single pole triple-throw switch, with a center OFF position. The 3 positions are off, close terminal A to B, and close A to C.

So it looks like one simply has to find the wires that go to A, B, and C, and connect them to A, B, and C.

One wire at a time. Let's start with C. C is labeled as connecting to "accessory 12 volt." Can you connect the C terminal on the switch to any wire any wire that gets 12 v when you turn the key to the accessory position?

Next let's go to B. The video said look at the reverse light and find the wire that goes to the reverse light and note its color. I am guessing that you have to check both backup lights. Then you say to pull up the plastic cover on the floor, near the doors, that hides the wires going from front to back, and find the wire that have that same color code. The schematic indicates that this is brown w silver. Then, on each side of the car, one needs to cut this wire. You'll have 2 ends. Connect the end that goes to the backup light to the B terminal on the switch. This is where I am unable to continue understanding what to do because the diagram shows 2 wires going to each backup lights, not 1 wire, and it looks like it is saying each of those 2 wires are brown w silver.. It looks as if you have cut 2 wires on each side of the car, not one wire. At the same time, I am seeing 2 wires, on each side of the car, on the other side of the cut, going to "unknown destination." These 2 wires, 2 on each side of the car connect to terminal A on the switch. Whatever that "unknown destination" is, it must supply 12 v to the backup lights, when you put the shift lever in reverse. Thus, when you use the switch to connect B to A, you send 12 volts to the backup lights if, and only if, the shift lever is in reverse. With the switch in the center position, the backup lights will not go on under any circumstances. With the switch in the right position, connecting terminal A to C, the backup lights will go on, not matter what position the shift lever is in. But the schematic doesn't show anything at all about the backup camera.

Regarding the text on the page with the schematic diagram: I see "A = front half. That seems like a redundant comment, because I can see from the diagram that terminal A is connected to the the front portion of the wire that was cut. B = back half – same thing. C = 12 volt. Actually that should say 12 volts if and only if the key is in the accessory position.

Next "when you put 12 v to the full circuit unseparated, the rear camera come on along with your reverse lights.". Sorry. That doesn't make any sense to me.

"when you put 12 v to only the fornt half of the circuit, only the camera comes on (unknown destination). I can't make sense of this sentence either.

"The switch must be put in normal positon for reverse lights to come on when the vehicle is put in reverse..." Assuming "normal" postion means center position – with the switch in the center position the diagram indicates that the backup lights will not be getting 12 v, and will not come on. "This position would be connecting the front half of the circuit to the back half." Not according to the diagram.

Nevertheless, there is nothing in the diagram that shows how the camera gets turned on. To turn on the camera you would need 2 things, a wire that gets 12 v to the camera, and a wire or wire that connects the signal from the camera, to the head unit. The diagram does not even show the camera, much less show any wires at all, that connect to it.

There is no label on the diagram, showing which position of the switch turns on the camera. Is it A-B, middle, or A-C?

With a good diagram there is no need for any explanation. The diagram alone should provide all the information you need.

 

You have over complicated the hell out of it. It is very simple.

You must do this on both sides of the car.

1. Find the color wire that goes to your reverse lights. (Brown/silver for me)
2. Cut this wire in half somewhere close to your for 12v supply for ease of installation (any 12v works)
3. Get a single pole, double throw switch. This is a 2 position switch with 3 connections.
4. Attach the front half of the wires you cut (brown/silver) to the center terminal on the switch.
5. Attach the back half of the wires you cut (brown/silver) to one side of the switch (pick a side doesn’t matter)
6. Attach the 12v accessory power supply to the other available side of the switch (only open terminal)

When you “turn on the camera“, you are essentially supplying 12v to the front half of the circuit which tells your camera to turn on. If your reverse lights are coming on when you do this, then you have 2 sets of wires running along your door rail. You will need to find the second wire of the same color and add it into your circuit the same way. This should allow you to turn your camera on without your reverse lights coming on.

When you “turn off the camera”, you are reconnecting the front half of the (brown/silver) wires to the back half of the (brown/silver) wires, simulating no modifications were ever made. This will allow your reverse lights to come on once you place the car in reverse.

NOTE: Switch must be “off” for reverse lights to come on in reverse!

 

By doing it this way, you avoid messing with the camera signal wires and determining which camera angle you want. You are tricking the head unit and keeping the option to change between camera angles with just one simple circuit. Also, the camera signals only put out around 3 volts on my Fit, and I don’t have 3 volts just laying around in any circuits in my car. So... this is your best option. If you find a better and cheaper way feel free to post it up. This should cost you Less than $10 in materials.

-switch
-about 5 feet of 16/18 gauge wire
-4 butt connectors
-3 ring terminals

It’s honestly not that hard...

 

I don't doubt that creating a wiring setup to turn on the backup camera is very simple; I don't doubt that doing that is simple, but understanding your explanation of how to do it is not simple. Your explanations of how to do it is not easy to understand. Sometimes an instruction contradicts a previous instruction. Determining which of the 2 conflicting instructions is the correct instruction, is not a simple task.

In the quoted text above you list 6 things to do "on both sides of the car." So that tells me that (1) on both sides of the car I have to find the brown-silver wire (2) Then on both sides of the car, I have to cut the brown silver wire, close to a 12v supply that is on both sides of the car. Then you say to (3) on both sides of the car get a single pole, double-throw switch. That amounts to 2 switches. However that conflicts with your diagram, which shows only one single-pole double-throw switch and only one 12v supply. Also from the diagram it was not clear whether the switch has a center "off" position or not. Assuming the diagram is correct, and that your instructions above are what are incorrect, and that therefore there is only one switch – is not clear what happens when you flip the switch to the left (connect A to B), and what happens when you flip the switch to the right (connect A to C) , It is not clear whether or not you can put the switch in the center position. You say connecting 12 volts to the "front end" of the divided brown-silver wire turns on the camera? That would entail flipping the switch that is shown in the diagram, to the right. It appears that that would cause the backup lights to be unable to light up. But I don't understand how that causes the backup camera to turn on.

I see from the diagram that flipping the sw to the left returns the circuit to it original form that it had, before you began modifications.

The diagram describes the switch as being "3 position." That conflicts with your later assertion, in the quote above, that "this is a 2-position switch." So which is it? 2 position or 3 position?.

From the start I had been thinking it was 3-position, and had been wondering what happens happens when the switch is in the center position. But now you say it is a 2-position switch.That adds complexity to the project – I have to figurie out whether I need a 2-position switch or a 3-position switch.

It has seemed to me that, by providing conflicting instructions, you have been over-complicating things and that my response, though it may seem complex to you,, had been to try to simplify things. For example, when you provide conflicting instructions I try to distinguish between which of your instructions correctly describe what needs to be done, and which of your instructions incorrectly describe what needs to be done. Then I discard the instructions that incorrectly describe what needs to be done. That is not a process of complicating things. That is a process of simplifying things.

Assuming there is only 1 switch, and it is placed on the dash, in the spot you show in your video, after you divide the brown-silver wire into a front section and a rear section, you need to get some more wire of the correct gauge (same as the brown silver wire) and connect it from the B terminal on the switch to the rear section of the divided wire, and you need another piece of wire from the A terminal to the front section of the divided wire. You haven't showed us how you have routed these wires. Especially the wires from the right side of the car (because ou have the switch on the left side of the dashboard). Even if I could understand your instruction, I wouldn't want to go ahead with this projet unless I had a plan for where to route the wires.

One of the most confusing part of the diagram is the fact that for each backup light, it shows thre are 2 wires connected to it. But there is a label stating "turns into 1 wire." I'm don't know what that means.

 

I’ll post another video trying to be as detailed as possible. Sorry for the confusion
but it’s very simple.