I need help hooking a remote wire to my jvc kd-g220.
Just connect the blue-white striped wire of the JVC unit to your switchable power wire. It could be connected to the antenna power wire, but the problem with this that not many units have the ability to sustain the remote power for a long time since the antenna wire wasn't designed to it. You can connect it to the switchable power wire coming from your dash. Is the wire that has 12 v only when you key ignition is to acc or on.
Don't use the power antenna wire as the amp will shut off when you change the source from the radio. You can have an external switch turn the amp on. Find a spot in the fuse panel that is only on when the car is on and run a fused (1 amp) wire to a switch then from the switch to the REM connection on the amp. This allows for full control and you never have to worry about forgetting to turn the amp off. Use a fuse tap for the connection from the fuse panel.
OK I see we have all backyard car audio installers answering car audio question ....there all wrong . Although there methods may work but they are not right an some could cause melted wires an possibly fire. So to do it correctly if you have an aftermarket head unit your remote wire is always always blue/w white strip, never use solid blue avenue though solid blue wire is a positive turn on wire its used for your FM antenna turn on for your radio never use it for remote turn on. If you have factory radio it does not have a remote wire nor does it have a positive turn on (acc) wire on back of radio. Some Chevy's do but most don't so you would have to hook your amp remote wire to your ignition wire which is either a thin brown wire or thin dark green wire which you can get at the ignition switch just look under the dash to ignition switch an follow the wires down to where its easier to work with an tap on. I recommend you use a test light or multi meter to make sure you have the right wire. You might have to drop down the belly pan under the dash to get to it . ever tap onto an existing fuse in your fuse panel. It would work but not good idea since you have different gauge wires in there with different amp fuses , all your fuses have numbers on them for a reason meaning the fuse is protecting a certain amount of current from the electrical componants in your car so if you add another componant to that fuse that means more current an now your fuse can't protect the componant like its attended to do an keep blowing your fuse an could cause melting wires or even a fire. I strongly urge you not to use the tap in to fuse panel method,.
The KD-G220 has only a blue/white remote output, and no true power antenna wire. If you have a power antenna, then you'll want to connect both the antenna wire from the harness and the amp's remote wire to the blue/white wire from the head unit. You don't really need any kind of adapter; just crimp or solder all three wires together. The head unit should be able to activate the amplifier and the power antenna from the same output without a problem. Electhrolite, I'm not sure how old the head units are that you've worked with, but any modern head unit's remote output is designed specifically to maintain the remote voltage for as long as the head unit is switched on. Keep in mind that the current draw on most amplifiers' remote terminal is less than .05 amps. There's no need to connect to an accessory power wire instead.
Chances are, that the radio has a blue wire, and a blue wire with a white stripe. One will be marked for antenna, use the other for remote, or use ignition from the fuse box. Just dont forget to fuse this if you go that route.
