I have the Kd-S550, I need the wire connections . thanks

To wire a JVC KD-R690S car stereo, you will need to connect the power, ground, and accessory wires to the appropriate terminals on the back of the unit.

1. First, locate the power, ground, and accessory terminals on the back of the unit. These are usually labeled "Power," "Ground," and "ACC," respectively.
2. Connect the positive power wire (usually red or yellow) to the "Power" terminal on the back of the unit.
3. Connect the negative ground wire (usually black or brown) to the "Ground" terminal on the back of the unit.
4. Connect the accessory wire (usually blue or blue/white) to the "ACC" terminal on the back of the unit.
5. Make sure that all of the wires are securely connected to the appropriate terminals.

Keep in mind that the specific wire colors and terminal locations may vary depending on your vehicle and the specific model of the JVC KD-R690S car stereo. You may want to consult the owner's manual or a wiring diagram for your vehicle and the stereo to make sure that you are connecting the wires to the correct terminals.
If you are having difficulty wiring the JVC KD-R690S car stereo or if you have any other questions, you may want to consult a professional installer or JVC customer support for further assistance.

I have yellow blue red and black how to hook those up?

The yellow wire is most likely the memory wire as it needs to be connected to a constant 12 volt source.

"Hook red wire to to acc fuse" means you need to hook into the fuse block under an Accessory Fuse. (ie: something that can't be turned on unless the car is running or the key is in the "Accessory" position)

The red wire is explained above. It does not connect to the harness.

Just remember that the yellow wire needs to be hooked to a constant 12 volts and the red needs to be hooked to a circuit that is only active when the car is running or switched to the "ACC" position.

Here is a link to the manual that will ID all the wires for you and what they do.

If your not 100% sure of what to hook up or how to hook it up, visit a quality car audio store in your area and have them do it for you.

http://resources.jvc.com/Resources/00/00/94/GET0247-002A.pdf

did you try red to yellow and then yellow to red?

There is a line level converter that would need to be purchased to that you can get the front speakers to work with the amplifier. The stereo already has rca jacks for the rear speakers. You can connect these straight to the amplifier for it to work. Bes sure that you use the blue wire to connect to the remote turn on for the amplifiers. Once you get the line level converter you will connect the wires and connect the converter using the RCA jacks. The question would be how was the 12 disc changer connected to the system. Would need more information on the changer in order to help with that component.

older pioneers:

2 x green (1 with black tracer) left rear spkr (black= negative)
2 x white (1 with black tracer) left front speaker
2 x grey (1 with black tracer) right front speaker
2 x purple (1 with black tracer) right rear speaker

Lower connector
1 x red ignition (switched supply)
1 x blue antenna output power (may not be not used)
1 x yellow Illumination (radio button lighting)
1 x orange permanant Battery supply
1 x black vehicle GND

If still not working swap yellow and orange wires! will not cause damage

Thanks, I got it right. The blue 'remote' wire stays unused and the red 'ascessories' and the yellow battery supply for the clock and memory are coupled together.

To stop the memory loss you need to swap the red and yellow wires around. (battery power and ignition power).

To stop the date loss, you need to cut the electrical ariel/remote blue wire.

Red: voltage source controlled by the ignition key Yellow: constant voltage source Black: ground Blue: power antenna activation wire (if equipped) Blue/white: amplifier activation wire (if equipped)