20-23 Anytime front/backup camera

bigssa · Jul 30, 2024

kisstoo said: ↑

Hi,

can we use the same relay for video signal and for reverse trigger (12V) at the same time? I am a bit reluctant to pass video signal and 12V through the same relay. Any thoughts?
Click to expand...

You should not use the same relay because it will cause interference with the video signal.

haboob_chaser · Aug 7, 2024

I am trying to understand why pins 1 and 3 on the switch are connected. Wouldn't this mean the reverse trigger is sending power to the relays coil regardless of which direction the switch is in?

Fireme · Dec 25, 2024

Anyone convert a 2014-2019, anytime wire harness to a 2020-2023 harness. Or have one to swap? I bought one off market and just found out if was the 1st of the 3rd gen. The plugs are different!

ToyotaTruck2019 · Apr 22, 2025

Hi forum,

Does somebody have the wiring diagram for this 30-pin connector?

Thanks in advance

N64_Wallmaster · Sep 3, 2025 at 7:02 AM

bigssa[OP] initial post: ↑

[This post has been updated to reflect changes and details based on discussion in the entire thread and to simplify information for future reference]

If you are interested in building your own anytime front/rear camera harnesses then this post may help. After looking over some videos of installations and the pictures on https://www.anytimebackupcamera.com/products/2020-kit, I thought that this would be an interesting project to put together myself. This project is relatively simple but if you are not comfortable with basic circuitry then I would recommend buying the kit. This post is not going to cover much of the installation as you can reference a good installation guide here: https://cdn.shopify.com/s/files/1/0...amera_-_Install_Instructions.pdf?v=1615938677

First, let’s make the wiring harnesses that plug into the back of the head unit. I purchased the two harnesses from AliExpress: https://a.aliexpress.com/_mqtRmig. You will need both the 28 and 30 pins harnesses.
The connectors and pins are described here:
https://www.tacomaworld.com/attachments/2021_tacoma_stereo_with_nav_pinout-pdf.5203700/ and https://www.tacomaworld.com/attachments/2021_tacoma_stereo_without_nav_pinout-pdf.5203701/

Starting with the 28 pins connector (R48 in the documents)
- Tap into pin 15 for a 12 V source
- Remove the wire and pins at location 16 (or any of the many other pins not in use)
- Please note that the new recommended way is to use a relay for the reverse trigger instead of diodes. Please use this post for a reference.
- Pin 28 will come with a red reverse trigger wire on the female end, leave that one in
- Cut the female end of the wire sourced from pin 16 and insert the male pin at location 28 on the male connector
- Here is a picture of mine (note that mine has the blue wire coming out of pin 28 due to the change I am making to use the relay implementation, but yours will have one side blue and one side red):

30 pins harness (R49 in the documents) - The harness is wired for an RCA input connection but is missing the RCA output connection from the reverse camera. So you will need an RCA male connector. If you have a spare RCA cable then you can source it from there, otherwise you can buy a couple from here (you need 2 male and 2 female RCA connectors for the entire project): https://a.aliexpress.com/_mtnbCkk.
- Remove the wires and pins from locations 10 and 11 as donors for the video pins
- Cut each wire about two inches from the male connector and solder the exposed wire end to your +/- wires from the male RCA cable
- Insert the positive/red wire pin from the male RCA connector to pin 28
- Insert the negative/black wire pin from the male RCA connector to pin 29
- Here is a picture of the harness:

Next, we will create a harness for the button. I used this button:
https://a.aliexpress.com/_msmKCXQ but any maintained on-off-on (SPDT) switch will work perfectly. You can also purchase the wires and connectors from this seller if you wish (I did not). This button has 7 pins and that’s what I will be describing here, but a 3 or 6 pins button works but would be wired slightly differently (you won’t need a ground wire). I used a generic 4 pins connector (

$16 Swpeet 580Pcs 2.8MM Automotive Electrical Wire Connectors Kit, 2.8mm 2 3 4 6 9 Pin Automotive Electrical Wire Connectors Pin Header Crimp Wire Terminals

https://www.amazon.com/dp/B07DK8Q5X4) to be able to easily connect and disconnect the button as needed. Here is a diagram of how the button was connected to the connector:

Next, we need to wire up the video relay. you will need a 5 pin, 12v relay ( https://a.aliexpress.com/_mMPdDek). The relay will connect the positive (red) wire of our output RCA with the positive wire of either the front or rear camera based on the button selection. The negative (black) wires of all three RCA cables will be connected together all the time. And we will use the front camera button output as the trigger for the relay AND to power the front camera. Note that by default, the rear camera is selected by the relay. So even when the button is in the off position, the rear camera is technically connected, which allows it to work properly when the truck is actually in reverse. Below is the diagram to wire up the relay:

Lastly, we need to wire up the reverse trigger relay. We will use the same relay as above. The relay will connect the OEM reverse trigger to the head unit, but will also send a 12V signal when either the front or rear buttons are in the on position. Below is the diagram to wire up the relay:

Finally, it is time to put it all together and create a harness that can be installed in the truck. The 28 and 30 pins harnesses each connect to the back of the head unit. You should have 3 wires coming from the 28 pins harness. The first one is a 12V that should connect to the 12V input of the switch (terminals 2 and 5) and the NO (pin 87) of the reverse trigger relay. The second is the OEM revers trigger which will connect to the NC (pin 87a) of the reverse trigger relay. And the third is the reverse input to the head unit which will connect to pin 30 of the reverse trigger relay.
Next, the 30 pins harness should have a male and a female RCA connectors. The male connector from the 30 pins harness connects to the relay's rear female RCA connector. The female connector from the 30 pins harness connects to the relay's male RCA connector.

Moving to the two remaining wires on the button. The ground wire connects to chassis ground. The front trigger wire connects to terminal 85 of the relay and to the power cable attached to the male RCA connector coming from the front camera (not shown in these diagrams).

Lastly, the remaining wires on the relay. The ground wire connects to chassis ground. The front female RCA cable connects to the male RCA cable from the front camera (not shown in any of these diagrams).

Total costs for materials:

Front camera - $13 - https://a.aliexpress.com/_m0DwQHA

Wiring harnesses - $27 - https://a.aliexpress.com/_m0vGHyg

Switch - $8.50 - https://a.aliexpress.com/_mNmdhso

Relay (2) - $6 - https://a.aliexpress.com/_mNmdhso

RCA connector (2 male, 2 female) - $8.50 (https://a.aliexpress.com/_mt915lw

20 AWG wires - $13.50 (https://a.aliexpress.com/_mOKZZvi

So all in (assuming you have some basic connectors, soldering iron, wire strippers, etc), you are looking at ~$80. But for me this project had nothing to do with the cost and everything to do with the experience of figuring this out on my own and learning for the next project.
Click to expand...

I know this is old post, but great writeup. Excellent way to save almost 150$

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