Help with Radio Wiring/amp

[vellis]

2002 LS V8, with 6 disc Alpine CD changer and no Navigation Unit.

Several years ago, I pulled the stock head unit, replaced speakers, and put in aftermarket amp. I am now selling the car, so returning it to stock.

Got it all hooked back up, and the center front and rear deck speakers to not work. The speakers in the front and rear doors work fine.

Is it possible that I don't have a connector plugged in (I plugged both connectors into the rear amp, and 2 connectors into the head unit)? Is there any commonality to the center front and rear deck speakers that would be a clue? A wiring diagram or suggestions would be appreciated.

 

[joegr]

On gen II, the front center channels and the subwoofers are both on one 8-pin connector (and nothing else is on that connector). I don't know if the same is true for gen I.

 

[oddball]

Same for gen 1. There should be three connectors going into the head unit.

 

[vellis]

Thanks guys.

I didn't see the 3rd connector, and assumed that it was for optional external inputs.

I'll pull the head unit out and see if I can find that cable.