Good evening,
I am a long time car audio buff but I can't seem to be able to figure out the wiring on my eq.

Alpine 3218. Old school 9 band eq unit, but worked great back in the day. I am wanting to add this to my system, as my touch screen only has one set of outs and this gives me front and back, as well as 2x 40 w outs for some 4x6 speakers I have in my center console.

I have a yellow (12V)
white
black (ground)
grey
blue and white.

I also have green/ green black, and purple/ purple black. The green and purple sets are the 40x2 outs. The yellow is the constant power, the black is the ground. I think the white is the switched, and the grey is the auto on when the head unit turns on, but I am not sure, I don't know what the blue white is for and I can not find a manual on this unit.

Any help is appreciated.
Thank you.