CHM-S620 SC901 VOLO2ALP

[Will]

Hello I want to connect an Alpine CHM-S620 to SC901 there for want to use a
Soundlinx VOLO2ALP.
But where do I connect the yellow wire? Do I connect it to mass,or do I
connect it to +12V?

 

[me]

If I recall correctly you connect it to a 12V source that is always hot.
That way you can eject the cartridge without turning the ignition on.