The red and yellow wires can go together on the car stereo but it is not advised. The yellow wire should be ON at all times, while the red wire should come on when you switch on the ignition. Do not connect these two wires together because they can lead to a host of problems with the stereo and battery.
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The red wire connects to the ignition with a 12-volt rating, which can be connected to the stereo. The yellow wire is the 12-volt battery wire, and it should also be connected to the stereo for power. Once connected to the stereo, this wire will assist in grounding it.
But, can the red and yellow wires go together on the car stereo? I look to answer that below as well as where the red and yellow wires go on the stereo and if these wires can be swapped on a car stereo.
Can You Connect the Yellow and Re Wires Together On the Car Stereo?
The red wire connects to the ignition with a 12-volt rating, which you can connect to the stereo. The yellow cable is the wire for the battery with a 12-volt rating, which you can connect for power to the stereo as well.
The following connections are required by the majority of car stereos: The power wire from the car radio is usually red, and it will most likely attach to a red wire from the vehicle. The ground wire for the car radio, as well as its matching wire from the car, will be black.
In some instances, the head unit of your vehicle will not switch on unless the red and yellow wires are hooked up. If your car stereo only works when these two wires are connected, you have a problem.
If you hook up the red and yellow wires together, you may discover that the head unit will not switch off even if the vehicle is turned off. Even if blown fuses are changed, this problem may persist in some cases.
Where Do the Yellow and Red Stereo Wire Colors Go?
A constant 12-volt battery wire, the yellow color wire should be connected to the stereo for direct power from the positive battery terminal (via an inline fuse). This wire always stays hot and retains memory.
Present for the 12-volt ignition, the red wire is connected to the cigarette lighter socket’s positive side, another area near the head unit, or the stereo itself.
Can I Swap Yellow and Red Wires On Car Stereo?
Once again, I would not recommend you swap the red and yellow wires on your vehicle’s stereo. It is because each wire serves a different purpose and generates a voltage in different manners.
If you need to switch power from the ignition, you use the red wire. If you require power directly from the battery, then the yellow wire needs to be engaged. So, you should not swap these wires on your car’s stereo