Reverse camera signal - pin

[LordBalance]

Does anyone know which wire is the reverse signal?

I installed the android head unit, but struggling to figure out which cable is the reverse positive.

As I understand it's the 28pin (the pink one). I measure the voltage between the ground, but it shows the 0 voltage in any mode.

Toyota CHR-2017, 1.8 Hybrid.

Please correct me if i'm wrong.

[flash22]

It doesn't have a reverse signal (It would be on pin 2)

you will need to tap the reverse wire in the main body loom on the passenger side or from the reverse light

[LordBalance]

12 minutes ago, flash22 said:

It doesn't have a reverse signal (It would be on pin 2)

you will need to tap the reverse wire in the main body loom on the passenger side or from the reverse light

Didn't know,  this is very unusual because 

Could you please point out which adapter? This photo taken under the passenger seat. 

[flash22]

The reverse does not go into any of them, the body loom goes along the passenger side up behind the kick panel and into the fuse box under the bonnet, the alternative is to use a canbus adapter, but these are not cheap and require more wiring/soldering

[LordBalance]

Hi flash22,

I have spent so much time checking the voltage and debugging wires. Cheers 🙂 

I can't figure out the wires based on this diagram, the black is not ground, but data positive

Black - data positive

Red +12v

 

What's the proper pinout? 

 

[LordBalance]

Finally, I was able to do it.

Moreover, I created a few diagrams and recorded a video only for CH-R cars! I hope it will help you guys.

 

[flash22]

Sorry i missed your posts, glad you got it sorted, enjoy your new toy

for future reference if it's needed by anyone

pin 24 can be as negative

[LordBalance]

26 minutes ago, flash22 said:

Sorry i missed your posts, glad you got it sorted, enjoy your new toy

for future reference if it's needed by anyone

pin 24 can be as negative

Good to know. Thanks 😌

[pooleorch]

so i have canbus adaptor installed on android head unit - in a toyota chr

it has the harness for the camera (28 pin with rca lead)

do i jsut need to connect up the "back"cable from canbus?

[flash22]

Can bus adapters can be hit and miss - try it, if not you will need to tap the reverse signal at the Junction box behind the glove box

[flash22]

3F - pin 16

or

3H - pin 10

 

confirm it with a meter

[pooleorch]

On 10/1/2022 at 1:04 PM, flash22 said:

3F - pin 16

or

3H - pin 10

 

confirm it with a meter

ill have a look thanks!

[pooleorch]

On 10/1/2022 at 12:09 PM, flash22 said:

Can bus adapters can be hit and miss - try it, if not you will need to tap the reverse signal at the Junction box behind the glove box

when you say tap the reverse cable - you mean for positive power for camera to the junction box pins?

where does "back"  cable go from canbus box - in with it?

[flash22]

Does the (back) cable go live (12v) when you put the car in reverse ? If so, connect it to your radio

If you can not get a reverse signal from the can bus "back" wire - you can connect the reverse wire from the radio to the junction box (confirm you have 12v in reverse at the terminal of the junction box)

A tap or splice is a way to connect into a wire, Usually by striping back so insulation and either solder or use an open crimp

 

[pooleorch]

30 minutes ago, flash22 said:

Does the (back) cable go live (12v) when you put the car in reverse ? If so, connect it to your radio

If you can not get a reverse signal from the can bus "back" wire - you can connect the reverse wire from the radio to the junction box (confirm you have 12v in reverse at the terminal of the junction box)

A tap or splice is a way to connect into a wire, Usually by striping back so insulation and either solder or use an open crimp

 

hi yes it does get around 13v when in reverse 

and weirdly if i plug the RCA lead into anything other than cable that goes into head unit it works if i use an app to view camera and if its in reverse!

so left green circle is back cable -  which as power when reverse is engaged

right circle is ground - but doesn't seem to make a difference if plugged in or not

this is RCA to RCA plug into head unit - in this pic - that doesnt work

 

hope that makes sense

[flash22]

On the radio you will have a reverse wire connect it to the Back wire

do you have the correct RCA on the radio, you may have 2 or more

yes you need to connect the ground from the black box tha feeds the camera

[pooleorch]

14 minutes ago, flash22 said:

On the radio you will have a reverse wire connect it to the Back wire

do you have the correct RCA on the radio, you may have 2 or more

yes you need to connect the ground from the black box tha feeds the camera

i have a back cable coming from canbus connection - not sure where reverse wire on head unit is ?

 

ta

[flash22]

can you post some pics of the wiring from the radio

[pooleorch]

what specifically would help - picture wise?

 

[pooleorch]

On 10/19/2022 at 10:32 AM, flash22 said:

can you post some pics of the wiring from the radio

[flash22]

Pink - Back - from the can bus adapter

on the camera adapter you have a black box this that has a

red 12v

black - negative

 

the radio need a reverse signal, so it knows when to turn on the camera

what is the make and model of the radio ?

[pooleorch]

 

everything you said is correct - connections

 

its one of those TS10 android units 

i really thought canbus handled this - ill check manual again - i have done cameras before but this is proving awkward

 

JUSTNAVI Universal TS10 manual radio (no additional purchase required)| | - AliExpress

About how to connect the rear view camera,there has 3 type method

: 1 . If your machine does not have canbus, how to connect the rear view camera https://ae01.alicdn.com/kf/H724aaf72b3394e78ace6b1fea1f4f6f3n.jpg

2. If your machine has a canbus, how to connect the rear view camera: https://ae01.alicdn.com/kf/H586e1a6d442641cfbafa3a710ba62a8aa.jpg

3. If you connect the original rear view camera: https://ae01.alicdn.com/kf/H4dcd4f10a48a4e66b43374c6146c0993q.jpg

[flash22]

See their examples, the Pink is connected back into the main loom with another wire (what looks like a white)

to simplify matters, find pin 3 (brown)  cut it connect it to the Pink - Back, wire from the can bus adapter

 

 

[pooleorch]

thanks will try 

to be clear - cut wire 3 so the connection is broken to the plug

- (not join pink (back) cable to it) and join pink cable to it and to power of little black box as i have ?

 

 

[flash22]

cut the Brown - connect the brown wire (the wire that goes to the radio) to the Pink (back)

also

connect the red from the camera supply to the pink (back) like you have now