Help with Line Output Controller

[HOMACK]

I've searched all through this Forum and can't find an answer. I have a 2003 Av with a Standard CD head unit. (No Bose, No OnStar). I don't have a center console (bench seat), so I can't find any external amp underneath seat or behind glovebox. I'm installing an amplifier to the stock head unit. I think I'm going to connect the line output controller under the dash, but I don't know which wires are for the rear speakers. I pulled the rear panels off and both sets of wires are brown and yellow to each door. Then they change colors going forward to the head unit, so I can't narrow down the colors. Any help/ideas/suggestions would be much appreciated. Thanks,
Dan

 

[kodiakz]

Right rear should be dk blue/ltblue in the passenger kick, and the left rear should be dk brown/yellow in the drivers kick if there really is no amp.

 

[HOMACK]

Thanks Kodiakz. I'll check it out tonight. I don't remember seeing brown and yellow in the passenger kick panel, but it was getting dark. Thanks again.
Dan