Exactly how is your set up run? Only 6x9s in the rear? How do you know the headunit still works? As in, not just powers up, but sends a signal. How did you measure the power in the speaker wires? An audio signal is not constant voltage, and it's AC current. Set your voltmeter to the lowest AC voltage setting, crank the stereo up, and measure voltage through the speaker wires. It will fluctuate but you should get several volts. If you're not getting any voltage through the speaker wire, make sure they are still connected tight at the head unit, and if that checks out then the amp in your head unit is probably bad.
Just to be sure you can test your speakers too. There's two tricks to doing this...touch a 9V battery to the connections and you should hear a clicking sound through the speaker if it is still good. Alternatively, you can test the continuity with an ohmeter. If the speaker is good you should have 4 or 8 ohms, depending on what your speaker is rated at.
Just to be sure you can test your speakers too. There's two tricks to doing this...touch a 9V battery to the connections and you should hear a clicking sound through the speaker if it is still good. Alternatively, you can test the continuity with an ohmeter. If the speaker is good you should have 4 or 8 ohms, depending on what your speaker is rated at.
