Where do I connect the blue remote wire on my car?

if you don't have a power antenna the solid blue wire may not be used. If you have external amps and the HU has both a solid blue wire and a blue wire with a white stripe use the blu/wht for your amp remote turn on. If you have external amps and the HU has only a blue wire use it to turn on your amps.

I'm guessing this is for an amplifier for a car stereo system. This is the wire that turns your amp off when you turn your car off, and on when you turn it on. It connects to the back of the head unit in the blue port. If you dont know how to do it, take it to the place you got your system installed and they will do it for free. Good luck

If it is to an amp then it is the wire that turns on and off your amp when you turn your ignition on and off. So you will need to hook it to a wire that is hot when you turn on your ignition and not hot when you turn off your ignition. You may be able to find an open spot in your fuse box. You wil need a test light to check and see if an open spot in your fuse box is hot all the time or only when the ignition is turned on.

If its a deck you are installing. just dont hook it up. if you are installing an amp it goes straight to the amp.