Avic 90 BT Backup Camera

[rollgrinder]

I can not get the backup camera to display while the car is in park or drive. It works when the car is in reverse. I know about the rearview button in the av source. When I hit it I get the same screen as in reverse but no image. The camera is set to On and Polarity-Batery. I had the unit installed at Bestbuy. Please Let me know what I am doing wrong. Thanks.

[BorisM]

What did they use for power source to the camera? It being Best Buy, they probably ran it off of the reverse light...

[rollgrinder]

I do not know. What should I check and how do i correct it.

[kmbrun57]

Find your little power supply box, follow the red wire home.

[todx]

if you paid to have it installed dont even bother. let them troubleshoot it.

[rollgrinder]

OK I will do that. I just wanted to make sure it is not something I was doing wrong.

[rollgrinder]

Just so I have the right information. What is the correct way to wire the backup camera. This was installed in a SUV an is a License plate frame with built-in TKO BH-LPC18 camera.

[Camelot One]

What is the correct way to wire the backup camera.

There are 4 wires involved. The first two are the camera ground and video signal wires. In your case these two are wired correctly.

 

The reverse trigger can be wired to the transmission reverse switch (uncommon), to the ECM (not available in all cars) or to the reverse light wiring itself. I believe the installation manual instructs you to do the latter. In any of these cases, when the AVIC picks up a signal on the "Reverse" wire, it switches to the reverse camera input. In your case, this seems to be working.

 

YOUR PROBLEM:

The last wire is the 12v+ for the camera itself. A lot of installers go the quick and easy route and just tap the reverse light + to get this power. The logic being its a "reverse" camera, rather than a rear view, and would only need power while in reverse. Doing it this way saves them from running a new power line. Unfortunately it means the camera flat out doesn't work if you aren't in reverse.

 

TO FIX IT:

To wire it correctly, you need a 12v switched power signal to the camera. This would give the camera power anytime the car is on, allowing you to manually view it, while the AVIC would also auto switch to it when in reverse. If you are lucky enough to have daytime running lights that also power the tail lights, its a simple matter of moving the + wire from the reverse light to the tail light. (make sure you get the tail light, and not the brake light) If you don't have full on tail lights, you'll need to find another way to get 12v power to the camera when the car is on, rather than only when it's in reverse.

[rjjr]

Thanks for the info Camelot. I have the same problem with mine.

 

but....

 

I've had my unit for about a month and now periodically when I back up all I get is a black screen with the reverse angle warning. The problem is definately getting worse. Any ideas??

[Camelot One]

That sounds like an entirely different problem. Check your wiring, when I was looking up reviews on some of the Boyo cams, I found a lot of people reporting the lines melting and shorting out.

[rjjr]

Thanks, I'll give that a shot.

[rollgrinder]

Camelot One Thank you for the detailed how to.