W212 E550 pre-face lift AMG steering wheel swap fail (help)
I did the swap really easily and after reconnecting the battery nothing worked. No horn, no buttons, no turn signals, no lights, no gears.
Does anyone know if there is something that can be done to make the new steering wheel and column work or do I need to reluctantly sell them?
Thank you in advance for any help
The new steering wheel
There new steering column
The old steering wheel



