1kris06
1kris06 HalfDork
10/29/23 2:01 p.m.

Anyone able to help with this?

Based on the wiring diagram/pin out. Do any of these look like they would have a reverse trigger for a backup camera?

 

2nd picture is what I'm trying to wire in.

Would B+ or ACC be the power wire?

Pete. (l33t FS)
Pete. (l33t FS) MegaDork
10/29/23 2:40 p.m.

B+ AND Acc will be power wires. B+ is constant positive, will do all of the heavy lifting power wise, Acc will be switched positive to turn the device on. It will see very low current, although a good installation guide will tell you what it is expected to draw.

Jesse Ransom
Jesse Ransom UltimaDork
10/29/23 2:45 p.m.

I think looking up manuals is going to be key. 

*Generally* (insert the usual observation about assumptions) I would expect B+ to be 12V always on (e.g. keep the clock running) and ACC to be powered when the car is on (or in acc mode, though with keyless ignition... it's different these days).

 But I'm already guessing. What are they? Is that a stereo with a screen that can be used with a backup camera? What's the 3-wire device? The power leads for the stereo-or-whatever, or another device? Camera?

 Does the "stereo" expect to be told when to show the camera input, or is it just triggered by powering the camera? Does the stereo power the camera on getting that signal, or do they each need power/signal on reverse?

 What you've asked is almost "i have two undefined black boxes. How do i connect them to each other and the car?"

 Just posting the descriptions/brands/models should help.

1kris06
1kris06 HalfDork
10/29/23 3:07 p.m.

Vehicle is a 2014 VW Jetta gli. New radio is plug n play except the OEM rear camera. 3 wires I need to connect are a converter box for the backup camera.

Car plug is CVBS and the new radio has a RCA yellow plug.

 

It's possible I had the ACC and B+ switched.

93gsxturbo
93gsxturbo UltraDork
10/30/23 10:19 a.m.

The only issue with switching ACC and B+ would be that the radio would only run with the key on and lose all its presets with the key off.  

As stated prior, ACC would be switched power and B+ would be constant power.  Its not always consistent to which one has the higher amp draw as different aftermarket manufacturers and different OEMs do things differently.

Since there are CAN signals on the diagram, does this radio get its reverse signal from the CAN?  Note that most factory radios don't work with aftermarket backup cameras and most aftermarket radios do not work with factory backup cameras without some fiddling.  

Agree there is not quite enough detail to provide an accurate answer.   

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) MegaDork
10/30/23 4:16 p.m.

dont whack off driving down the road.  there's a "handy detect" pin in the first pic.

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) MegaDork
10/30/23 4:22 p.m.

also, KL30 is German for B+.  i don't know why.

Pete. (l33t FS)
Pete. (l33t FS) MegaDork
10/30/23 5:18 p.m.

In reply to AngryCorvair (Forum Supporter) :

30 is DIN for constant hot, which is why the 30 pin on a relay is labeled what it is.

That is most of the extent I know about DIN wiring.

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) MegaDork
10/30/23 5:33 p.m.
Pete. (l33t FS) said:

In reply to AngryCorvair (Forum Supporter) :

30 is DIN for constant hot, which is why the 30 pin on a relay is labeled what it is.

That is most of the extent I know about DIN wiring.

TIL

Pete. (l33t FS)
Pete. (l33t FS) MegaDork
10/30/23 6:55 p.m.

In reply to AngryCorvair (Forum Supporter) :

Have a ball with this list

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