MB R129 Modification and Service

I finally found a solution for Apple Carplay installation that i can live with, i just bought a rear view camera system from Aliexpress.
It is meant to be strapped on your original rear view mirror, i could not live with that as it does not look very good.
So i took out the screen and forward facing camera, and i built a new housing that fits the original rear view mirror mount and replaced the original with this solution.
So now i have backup camera and front view camera that always records when out driving.
It also have a park monitoring function, so it will start recording if someone bumps into my car when parked at a parking lot.

While waiting for parts for the CarPlay project i am trying to get the perfect finish for my interior. I am using Hydro paint, looks pretty real i think 😊
More options than the vinyl wrap, as you can adjust the base color.

Everything is working stable and connects wireless to the phone as soon as i am in BT range, so i have found the way to make it stable. But it means i had to go to someone to get the main unit produced. I realized i did not have time or possibility to produce this in bigger numbers. So the main unit is now a proper sytem that can be put into any car with 12v system, only issue for a vintage car is that you need a screen somewhere.
All functions are available through the pad in the picture, so no need for a touch screen.
I have experimented with a screen on my player, but i am waiting for a new and better option. The rearview mirror in the R129 has a lot of space inside so you can actually put a screen behind a mirror glass plate and have it all hidden in the mirror.
So what solution would be preferred ? ,the player solution will most likely add $2-400 if you do not have the BT-2 unit already. The CarPlay unit it self will probably be around $400 with all features but without any screen. This of course depends on how many orders i get. And a simple screen for use in a player or in the mirror would not be more than $20-50
The screen only needs hdmi or standard composite input.

Here is the spec and features on the Carplay unit.

Modul supports Wireless CarPlay, wired Android Auto. And USB cable screen mirroring.
Supports USB HD Video up to 1080p and lossless music (APE, WAV, Flac, MP3, WMA, etc)
HDMI and CVBS (480p/720p) output.
Handsfree mic input.
Backup camera input.
2 USB inputs for streaming and connected CarPlay (mirroring)

Touchscreen support ( Resistive )
RCA audio output with volume control and EQ settings.

External control unit controlling all functions.
Includes mic for handsfree

Mobile phone charging.

And future software update via USB.

Spec.

Inputs.
2xRCA Rear cam supporting AHD cameras, and one video input.
Minijack 3.5 microphone input.
2xUSB
Outputs.
3xRCA CVBS Video and R/L Audio
1x HDMI
Input voltage 9-16v
Power consumption 5W
Working temp -20C to 75C
Size 115x70x 25mm
Weight 170g