I'm adding an amp to my factory system and taping into my factory wires. Its an 03 with the stock infinity system. Does anyone know what color the factory speaker wires are? Ive searched the forums and came up with 4 different answers.

I can't to get this system in, 2 kicker L7 10's and a ZX1000.1

 

I ran into the same issue when I was putting my subs in. I just ended up figuring the wire colors out myself. I do know if you are going to tap into existing wire, use the front door speaker wires for the subs since they are strictly your bass freqs. Routing the wires through the door is a pain. To figure out which wire is a positive and negative, use the 9 volt battery trick.

9 volt battery and two short pieces of wire. Connect to speaker and watch what direction it drives. Out=Positive, In=negative. Doing this you should be able to identify the factory speakers wires now. Seems ghetto, but it does the trick!

Bryan