[Android General] Jagermonsta:
Brown is the reverse trigger, so that your reverse camera is displayed - so the AV cable you should have gotten with the reverse camera should be running from the headunit to the camera in the back of the car. This AV cable should have a red wire as part of it. At the head unit end of the AV cable, connect the brown wire of the head unit to the red wire coming out of the AV cable. On the camera end of the AV cable, connect the red wire coming out of the AV cable to the positive of one of your reverse lights. So that way when reverse is selected, the reverse lights illuminate and a signal is sent to the head unit via the red wire in the AV cable. :) That's what I did anyway. Or you could connect the brown wire straight to the switch which turns on the reverse lights under the gear shift - but that's more work and you're already running the AV cable through the car, so...

Hopefully that's clear enough to help you out!

I feel it's worth mentioning too that CaFi are apparently going to release a firmware update for the Dashlinq 4... sometime. Have a chat to their support people perhaps and see if they have an ETA - this might fix some of the issues you've been having.

As for the Joying unit, this is what I bought:

http://www.carjoying.com/joyingr-7-...vr-bluetooth-airplay-reverse-camera-wifi.html

It's only got 1gb of RAM (they are apparently releasing a 2gb version at some point, no ETA though that I know of) but I haven't had any issues with lag. I do have 2 issues with the unit though now that I've had it a while, and had a chance to discover more things that are wrong with it. The USB camera for the dash cam app that was supplied with it appears to be blurry and not focus very well. I talked to their support people via their FB page and in kinda broken English they just said "yep, it is". Didn't offer a solution to it being blurry, just agreed with me. There's apparently some Logitech USB cameras that work with this unit but I haven't searched properly for a replacement yet. The other issues I have is also to do with the USB camera - sometimes it stops responding, and when you start the dash cam app it says that there's no USB camera attached. I plugged the camera into a laptop briefly before installing it, and it found an audio device (but no audio was coming from the camera). I suspect this might be the cause of the issue - the head unit has a built in mic and there's a second USB mic attached when plugging in the camera, perhaps this is causing a conflict, crashing the camera or what have you. I need to do more troubleshooting but I'm confident that if I used a different camera without an audio device in it, all would be fine with my Joying.

There's a more expensive version of the same type in their store also - this appears to be more expensive as it's held in their US warehouse? You'd have to look at them both and figure out which is cheapest once shipping is added on, I guess. I'm in Australia so I ordered the cheaper one, shipped from China (took a less than a week to arrive).

It indeed does have GPS and everything else that you'd expect from an Android device (except without the lag of the Dashlinq). Here's their YouTube channel:

https://www.youtube.com/channel/UCFrkbO6PkJJOR7c3zWiloVA