I'm in the process of installing an amp and new speakers, but cannot figure out exactly where to attach the turn on lead of the amp to. I checked out the hot or not thread in the electrical forum, but the numbers don't match up to what I'm seeing in my fuse box. I was thinking F32, for parking distance control (on my fuse panel). Anyone else with a 2009 MCS that has installed an amp and might like to help? Thanks in advance

 

Just did it. Finished the pass-through xcX9331 connector, installed it, and I have sound!

I used F31. I have PDC so decided to use the AUC.

F31 - 5A - 15 X11008 11 0.5 GN/RT AUC sensor

 

Does the F31 turn off with the radio?

 

It turns off with the engine.