Audio Systems: Alpine EQ wiring, alpine eq, band eq

Question
I have an Alpine 11 band EQ/sound field controller 3324.
It has a blue/white stripe for its switched power.yellow for constant.black grd.
It also has a pink/white stripe wire.can you tell me what its for?
         thanks,Martin

Answer
I could not find anything on the model number you gave, 3324.  Are you sure it is correct?

However, my guess, based on other models with similar old wiring schemes, is that it is a remote wire to go to another device in the car such as an audio amplifier.

Are you sure it is not the their DSP 3324 unit?

Sorry, could not find you a precise answer.