Ever thought of pushing video into '13-'15 head unit via the NAV USB connector?

[Kedis82ZE8]

I was thinking more along the lines of pushing phone video into it. Nothing I plan to do but food for thought if someone wanted to view phone map data on their in-dash navigation or other phone related pieces.

http://ep.yimg.com/ty/cdn/yhst-24809172479195/mazdacx5nav.pdf#_ga=1.89304988.644728734.1455059418

My G35x has old school RCA connectors in armrest to connect external video sources to NAV unit.


EDIT: No idea if this is even possible via this USB port... it is probably only used for storage access via the SD card.

 

[craigo]

It's interesting the GPS antenna connects to the car-nav unit and not the head. That suggests that some kind of processing is done in there - could just be a GPS chip, sd reader and a usb interface. Perhaps the TomTom is set up to where it receives the GPS data over the same path as the map data from the card and every head unit has the TomTom software preloaded (likely).

Assuming the unit does the processing and the head is just a dumb terminal for it, you'd have to figure out the video protocol in use - video over USB is not terribly straightforward.

 

[MindlessTeesCX5]

Im very interested in doing something like this, could a cable like this help?

http://www.carid.com/beat-sonic/audio-video-rca-input-cable-harness-mpn-avc2.html#applications

 

[craigo]

Im very interested in doing something like this, could a cable like this help?

http://www.carid.com/beat-sonic/audio-video-rca-input-cable-harness-mpn-avc2.html#applications

That's looks like its for the kind of display you see on the back of a seat or drop down from the roof. Not sure it would work on displays integrated into the head unit. You would use this for attaching external video player to a non-integrated display.

 

[thedaddyb]

You could also force it through the backup camera screen. I'm not sure if the warnings and parking lines are applied by the headunit or if they are built into the camera though.

Would only have to diode isolate the reverse trigger and and separate the video signal from the camera to another rca input.

 

[MindlessTeesCX5]

Is there detailed instructions on how to do something like that with the back up cam? I want to install a mirrorbox in my car somehow

 

[CC58]

You'd have to have detailed information on USB protocol to push video to the screen. I'm sure that's proprietary and not available.

You could find the video line from backup camera. It has to be standard composite video (yellow RCA). Install an infrared camera in the front grill and make a toggle switch under the dash to switch between backup camera and infrared camera. Punch in feature 92 on radio and presto you can see without headlights. Pull parking brake up one notch and your running lights turn off. Stealth mode.

 

[MindlessTeesCX5]

I've searched around and haven't found much information about how to do this, has anyone else had better luck?

 

[MindlessTeesCX5]

I recently found this cable and purchased it, I plugged it into the back of the head unit where the reverse cam would go and the screen came up but it was black like it saw an input but what I was trying to test with was the wrong resolution. Testing continues

https://www.aliexpress.com/snapshot/8281585329.html?orderId=79598276975814&productId=2050533304

 

[MindlessTeesCX5]

That link didnt work but in the video below I show video streaming through the rear view camera input. The link to the cable I used is in the video, there is still allot to figure out but this is pretty interesting.

https://youtu.be/dVFwgRfgSV0

 

[Kedis82ZE8]

MindlessTeesCX5.... interesting... thanks for keeping us posted on this