Just the screen… no nav disc…
I’d have to bench test that but I can say on my car, oem system hacked to use the rear AV input for android tv box video out:
Once it’s all setup, and the info button is pressed twice to activate av input, the nav just stays in that mode, unless the reverse camera is activated.
Eg after key off, key on, it’s still on the Btssm screen with virtual gauges shown.
Importantly, crucially, this is also true after a battery reset, it just continues to work in AV mode showing my Btssm setup.
So that’s promising.
Sometimes it’s not till weeks later that I have to reload the original nav disc…
The nav hack is ground a pin on one of the map dvd plugs…
Iirc that allows the screen to not lock out at speed, maybe the function restrictions?
And cut or ground the handbrake sense ground wire going to the main plug on the rear of the screen.
That hack has a similar effect to the other, allowing full use of the screen switches and touch menus.
There is a service manual for the Kenwood nav unit, with all the pinouts, meaning a bench test of the basic schema should be possible.
I found it by googling the manufacturer part number or the model.
Can link you if required.
You may or not require the DVD drive basically.
If you were super smart you might repurpose the nav screen buttons to activate functions on the android, such interfaces are a thing.
And or add a usb touchscreen to control the android interface.
It might be a more popular mod, but the C1 nav res is abysmal.
The C2 screen res is much better but iirc it’s limited to a single input for a reverse camera, however there’s probably a jdm harness available on yahoo jp that allows tv input.
viewtopic.php?f=6&t=36525Here’s a post with more info ^^^