I prolong the reverse gear cable in the adapter...
...and attach it to the female connector with a pin stolen from another adapter. By this I dont have to tap in to any of the cars cables, now it will get it from the correct pin instead.
So plugging in the adapter and the 12V switched for a test run.
Turning the key and, voila!
Plugging in the iphone in the USB port and Carplay just works.
Many of the settings on the HU are unavailable, but when grounding the parking brake signal they become active. So a permanent ground is the solution for the responsible me.
There is a GPS antenna for the HU aswell, used to better the signal. I opened this GPS cover under the windshield and found that the antenna would fit nicely in there. But getting the cable down to the HU looks like a pain.
Does anyone have experience in drawing the gps cable from its original position?
To be continued...