Where does the REM wire go?
Some of the more common options for connecting the remote turn on wire when using a factory head unit are to the wire connected to a power antenna (older vehicles which do not turn off the antenna when not using the radio) or to the vehicle’s fuse box.
What color is the REM wire?
What does REM mean on car amplifier?
REM means remote or Remote Amp turn-on and is normally a 12V BLUE wire (with no stripe) that comes directly from your headunit and is used to turn on the amp from a head unit. When an amp is connected to power, it will not turn on until a signal comes on the remote wire.