SL/R230: Upgrade 2003 SL500 Radio



I have the Amplifier schematic and the Command schematic, in both I can see a "wake up" connector. Then this question comes to mind..
If the aftermarket radio does not have a wakeup signal, how the amplifier gets woke up? Will it function without that wake up call?
The rest of connections are pretty straight forward! I am attaching the diagram for your reference.


