2012 Reverse Camera Switch

The camera switch cannot handle the amps required to trigger the camera on? I'm just wondering if the relay is necessary.

 

I'm definitely not an EE - but the Air On Board switch is rated at 3 AMPs which is apparently plenty to run the camera. The switch is a simple on/off type, and the relay is primary used to add ON/ON functionality where the the normally closed (NC) circuit allows the camera to operate as factory when the switch is in the OFF position. When the switch is pushed to the ON position, the relay is energized and flips the source (in this case power) to the normally open (NO) position. A simple, mechanical single pole dual throw (SPDT) On/On switch will do the same thing as the push button and relay combo, but it just won't look as fancy. HTH.

 

Can anyone provide a schematic and/or pics for a 2015 using an aironboard switch?

 

docloco - checkout post #80 (on page 4 of this thread), hopefully it will help. I use this mod all the time with the boat - when my son is hooking up the trailer and I do not want to be in reverse with him behind the truck (being hyper cautious ) - or to double check the hookup before driving off.

 

I missed that, thank you.

 

I just finished wiring up my switch and it really isn't necessary to run a relay. Just find your reverse wire in the connector behind your head unit and join it to the wire (through your switch) that powers on the radio when the key is in the acc and run position. You need to install a diode in the reverse wire so that it doesn't backfeed when the switch is pushed. Works perfect.

 

Now the wire from the computer will connect to the COM terminal on your SPDT switch. The other wire from the entune unit will connect to the NC terminal. Then the 12v signal from your add-a-circuit will connect to your NO terminal. The video will help show you how it looks. Here is where I chose to install my switch btw:

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You said in your write up:

" Now the wire from the computer will connect to the COM terminal on your SPDT switch. The other wire from the entune unit will connect to the NC terminal. Then the 12v signal from your add-a-circuit will connect to your NO terminal."

But in your video you said that the Entune connects to the COM terminal and the other wire (computer) connects to the NC terminal and the 12v from your add-a-circuit connects to the NO terminal.

The video sounds like it would be the correct way to hook it up.
Can you or someone who has done this on an Entune radio please clarify?
I have made a harness with everything ready to install, but want to make sure of the connection.


Thanks

Chuck

 

If you have this H.U then basically you have same H.U with 3rd Gen SR5. You can use 28 pin cable harness to do front camera, smartphone mirroring, media player...
Feel free to contact me for more info.

 

Hey! I am attempting this mod today but just curious I'm your right up you say you can use an on-off switch yet the video it looks like an on-off-on.
I am a little confused also on what wires I am working with. If I break it down from what I gather I do an add a circuit behind the driver side coin tray, run that to switch, then splice into the reverse 12v signal wire behind glove box on run that through the switch also?? I think I am missing something

 

I don't think you splice into the reverse 12v signal. I think you need to interrupt that signal wire so you can run it through the switch. I think the video, which was extremely helpful if I am understanding this correctly, shows that the 12v reverse signal wire gets cut and routed to the switch and then from the switch, back to the same pin location so the switch is basically in the middle of the 12v signal wire. I had the same question. I have an aftermarket reverse camera and wiring installed into the factory head unit for a 2014 reg cab, the basic touchscreen model. The kit came with a factory interface plug for the headunit that has the camera rca, camera ground, and outgoing camera power line. I then tapped into the reverse lights 12v line under the drivers kick plate and that “trigger wire” from the tap was inserted into another factory plug on the headunit that was already present. In other words, the 12v line gets powered when in reverse and that triggers the headunit to send the 6v power to the camera through the spliced trigger wire. The instructions were clear that the 6v camera is powered from the head unit and the 12v power source is only a trigger to tell the headunit to turn on the camera. I think our question is similar.

Can anyone confirm that I am understanding this correctly?

 

I spoke with Ruggybuggy to make sure I understood how he did this, and it seemed like the most simple method; so I traced a few wires and put together some instructions/diagram for everyone.

All the wires are accessible from the back of the head unit (no need to remove the glove-box).
You will cut and splice in a diode (I did a Y with 2 just to be safe - a package is typically 20) on the reverse wire to the head unit.
--- I ordered 3a 40v Schottky diodes, but I believe 1a will suffice.
The power comes from the on/off line to the head unit and you can just tap that.



If you have wire/connectors/taps, the switch and diodes can be found for around 15$ on Amazon.

 

Can you place the 28 pin plug in the sketch? Which end of the red wire it's on?

 

My diagram shows is color coded to the correct wire, the associated photo of each is next to it (just use the disconnect button to get orientated). If you are still unsure, feel free to PM me.

What ever you do, don't try to run a jumper wire without a diode to test it.

 

FYI this mod will not work on a 2014 off road

 

Hi, I am trying to install manual activated with SPDT On-Off-On switch front an rear camera on after market double din and generic cameras, at this point I have it working with one rear camera (no relay) and it's working fine .. I am about to add the front camera.. and I was planning just interconnect the output Video signals + /- from both cameras with a Y adapter to the stereo and just activate the power 12 + through the SPDT On-Off-On switch (I really don't think the relay is needed but I am not an EE) do you think that I could have video interference because the Y adapter? does a diode works also for video signal? or only for 12+ voltage.. so i could add a diode in both output video signal before the Y adapter so it doesn't backfeed? I am newbie.. so sorry if what I am asking make no sense..

 

yes it will.
I just installed this in my 2014 access cab off road.
I got this harness:
https://www.anytimebackupcamera.com/products/anytime-backup-camera?variant=21457662607438
which is just a jumper harness to go between the 28 pin connector and your radio, and connects to 2 wires, a + with the key, and the signal wire for the back up camera to come on, which has the diode in the jumper harness already. So all you have to do is touch the 2 wires in this harness together and the backup camera comes on.