I have heard the blue remote wire goes onto the the wiring harness. The turn on wire also called the remote wire is located behind the stereo.
Remote Control Wikipedia
Where does the remote wire go. On my harness for the headunit it has a loose blue lead with a little piece of paper say att at the end. This is to signal external components such as amplifiers or power antenae to. If you cant find a remote wire from the hu you can use a switch. If there is only one blue wire then what id do is connect up the amps remote turn on wire to the stereos switched ignition wire yellow on the gm harness red on the stereos harness and run it through a switch so you can kill it when you turn the stereo off. The remote wire coming out of your car stereo constantly sends a low voltage signal while the stereo is turned on. The remote power wire needs to be connected to a wire that goes hot either when the car is turned on or the radio turned on.
On aftermarket stereos its usually a blue and white wire. Posted on monday august 04 2003 2138 gmt. Step 7 install the remote turn on wire. I think this is where. You might want to recheck how you connected up your stereos harness. Well the remote wire is what runs from the back of the deck to the amp and that wire sends a signal telling the amp to turn on and off.
When the amplifier senses this voltage it turns the amplifier on. It does need to be wired correctly. Did you try the speaker output lead from the factory amplifier. The remote wire is for powering on the amp. That is your best bet because it wont go hot turn the amp on until the radio is turned on. To wire a switch to your amp you need wire the 12 connection on your amp to the remote on your amp.
The remote wire will tell your amplifier to turn on whenever the stereo is powered up usually whenever the vehicle is turned on. The remote turn on wire receives voltage from the factory electrical system when the ignition is in the accessory or on position keep reading this document for the complete explanation. If you supply it with any 12v the amp should work. This voltage is transferred through the remote turn on wire to the amplifier turn on circuit.

















