Car Stereos: PROBLEM, stock stereo, speaker cone

Question
IM TRYING TO CONNECT A AMP ON A 05 TAHOE W/STOCK STEREO BUT I CANT TELL THE WHICH IS -/OR + ON THE WIRING FOR THE SPEAKERS CAN U GET ME A WIRING DIAGRAM

Answer
Hi Jose,

I don't have a wiring diagram for the speaker, but an easy way to tell is once you're sure you have the -/+, connect a AA battery to the two leads.  When you tap the wire to the battery, if the speaker cone moves OUT when its touched, then the + lead is on the + of the battery, and if it moves IN, then the + lead is on the - of the battery.

Justin