Can someone explain how following items work? I understand it's simply an android device with wiring harness which will do following:
1. Hook into vehicle CAN to read "MENU" press to switch signal source.
2. Wire splitter to show video/audio from either OE multimedia or from VLIne
Correct? Or it does more? I assume following shortcomings:
1. Backup camera will not work without switching to OE. Or they provide hookup into reverse signal?
2. On-demand camera (by pushing camera button) will not work for sure, right?
3. Factory mic, usb and so on will not work for calls, right?
4. Audio quality might be compromised because of android signal processing. No?
I kind of want ApplePlay but if all my assumptions correct I'd rather live without it..
The grom vline2 will hook into your factory audio media interface and replace the USB input to it. So to switch and see the vline2 interface you need to press the USB/Aux button on your audio system.
Go to grom vline2 website and you can see the manual on how the connections work. its very simple, remove existing plug-in wire behind factory display and connect the grom vline2 wire and it daisy chains the factory wire you removed so you plug that removed wire into the grom's cable.
You dont do any wire splitting for a OEM setup, just plug and play type mostly. If you already have hacked the factory setup with in motion bypass or others, you need to do things a bit different.
It works smoothly with reverse camera so if you are using vline and reverse, it will show just the reverse camera (not the side camera combination on my 2011 lx 570) some of these features may change with the year model of your car. It doesn't use the factory interface for showing reverse and slow down/stop cameras on front and side in vline mode. So on demand camera will work but you may need to switch back to vline again by pressing the USB/Aux button. (Although the audio for the vline will still play as you view camera).
I think grom vline2 sells additional cameras to provide 360 degree view of your car using a different app within grom, but for that you replace factory cameras with another type of cameras and at that point this view will only work from grom display.
Factory mic is left intact but will not work within vline2 and if you want to use vline2 for speaking (Txt to speech commands, taking call with carplay, you need to wire its own microphone).
What most people do is that they take their phone call using the factory bluetooth as its noise cancellation is superior to vline2 microphone. But its a choice, you can use both. You can be connected to grom as well as factory bluetooth at same time so your carplay will work as well as answer call via factory bt.
4. Audio quality is not noticable compromised as its feeding the audio to factory audio system rather than controlling the signals and providing it directly to speakers. This is one of the major advantages touted with this setup as you are not replacing the factory unit and even if grom is not working or toasted, you have the default oem setup still working.
This is what I think,
If you need carplay badly, this is the best way to go and just expect carplay to work. Other features like grom's map apps and others will only work when you are connecting it to your phone's internet hotspot. but carplay works well everytime you get in the car it auto connects etc.