92 400e speaker wiring (originally had 1432)

[moruzzi]

Trying to correct the botched job the previous owner did with an aftermarket head unit on a 400E (orig radio would have been becker 1432 with amps in trunk and Dash, door and rear speakers).

Anyway powereing the fronts is obvious - you can see the speaker connectors with the head unit out - wire in to FR and FL of the head unit.

The rears and doors are the question. I can run lines front he head unit RR and LR tot he rear deck speakers. That leaves the doors?

How do you power the doors????

The head unit (sony CDX-GT52W shows mono subwoofer outputs on the diagram I pulled from the web - I could use those for the doors but what leads? The speaker outputs from the amps look like 2 sets from each amp (I know the factory amps would power R and L - NOT F and R) the black and yellow are obvious and go the the rear deck - does the grey set go to both the F and doors? If so would runing the sub to that set of leads power just the doors (fronts are now unplugged from harness)?

thanks for the help.
Paul

BTW I have a set of the 1432 amps if that would be a better solution - But I'm not sure what the inputs are to the 1432 amps (colors) and if they take preamp (which the head unit has) or line, searching has me confused.