they say its a blue cable.
yea you do...you could also put a toggle switch to it so you could turn it on yourself this is what i did and it works great.... Good Luck!
If its an aftermarket headunit you connect it to the blue wire in the aftermarket harness. If its a factory headunit you splice it into the switched 12v wire.
The amp won't turn on unless there's voltage on the remote terminal. That's the function of the amp remote wire; it connects to a head unit output, which sends voltage to the terminal when the head unit is on. If you don't connect a remote wire, the amp will never turn on. If you connect the remote wire to a constant power source, the amp will never turn off. You need to wire it to a key-switched power source, or the remote output at the head unit. A few amplifiers have signal-sensing circuits that will automatically turn the amp on whenever an audio signal is detected. These amplifiers do not require remote cables, but they're fairly uncommon.
Yes, the remote cable is what turns the amp on and off with your stereo. Without it you'll get some nasty noises when you turn your stereo on or off. Even if you keep the radio on all the time, the amp will get power before the radio powers up when you start the car and you'll get a nasty, possibly speaker blowing, thump when the radio turns on.
