This input is enabled when the vehicle is in reverse. Even some of the bottom-of-the-line head units have multiple input choices.
Generally, the USB device plugs directly into the front of the head unit. The analog input will be driven by the headphone output of the audio device. Some head units have a dedicated iPod or iPhone input that requires a special cable. Those are being phased out. When you have a USB flash drive plugged into the front panel, it is easy to damage the drive or the head unit if it's accidentally hit. Small drives that barely stick out from the panel like THIS are available. If you have a really large capacity drive that you want to use, it may be a bit less susceptible if you use a short USB extension cable.
It won't stick out as far and is a bit more flexible so if it's hit, it's less likely to damage the USB port on the head unit.
There are other inputs on this head unit that you may not see on lower models. In the following photo, the 'MIC' jack serves double-duty.
For normal operation, it serves as the mic input for phone calls. For setting up the head unit, a special microphone is used to set the equalization. This is used for the HD radio tuner and the Bluetooth adapter for the model below this that doesn't have built-in Bluetooth capability. The black jack on the right is for a wired remote.
This can be used in several ways. For marine applications, there is a weather-proof wired remote that can be mounted in the open, leaving the head unit protected from the elements. The yellow connector in the following image is for the navigation module.
Some head units have navigation built-in. Others like this one are nav-capable and require an external module. Now there are other options. Satellite Radio: Satellite radio is delivered via satellite. It requires a special receiver. The receivers are built into some head units but are generally optional and require a separate module. SiriusXM is the best known satellite radio provider at this time. The content varies by station and can be virtually anything music, sports, comedy Unlike other broadcast radio, it's uncensored so all content may not be suitable for all family members.
Unlike other pay services like Pandora or Rhapsody, there are some commercials on some channels. HD Radio: HD radio is a parallel broadcast with content that mirrors the content of the normal broadcast for the radio station. HD radio is free if your head unit has a built in HD tuner so there are no subscription fees. Both HD and satellite radio can provide CD quality sound but the sound quality will depend on the content provider.
In the case of HD radio, the difference in sound quality between the normal broadcast the HD broadcast may be minimal, especially if you have a good tuner and good reception in your area. Remote or Power Antenna Output: There may be one or more switched 12 volt outputs on your head unit.
These outputs are usually called remote outputs. They are used to control power amplifiers or power antennas. If your unit has only one remote output, 12 volts will be sent through it when any audio source is being used tuner, CD, tape, aux It will be 'hot' have 12 volts on it when the head unit is on. It will have no voltage when the head unit is off. If the unit has two remote turn-on wires. One dark blue wire will be for your power antenna and will only have 12 volts on it when you are using the tuner.
It will have no voltage on it when the head unit is switched to CD, aux or is switched off. This is so that your power antenna will go down when it is not needed. There is a diagram on the Test Light page that shows both types of outputs. Please note that the remote wires for stock OEM radios will be of a different color probably not blue. You can refer to the following page for the color code for your vehicle.
Others used the solid blue for the power antenna. Fuses: Most remote outputs are switched through a very small transistor or the fragile output of an expensive IC. The remote output lines should be fused close to the head unit with a. A 1 amp fuse may not protect the switching transistor the one that supplies power to the remote output. Do not try to use the remote output to power fans directly. If you want to do anything more than turn on amplifiers, you need to use a relay as a buffer.
In some head units, the fuses are not always in plain sight. In the case of some Pioneer head units, the fuse is hidden under a tab on the plug for the wiring harness. In other harnesses, the fuses are in black boxes inline with the wires in the harness. The owner's manual for the head unit will show you where the fuses are.
These can often be downloaded from the manufacturer. Hopefully, this article has not dissuaded you too much. If you are serious about improving your car audio system and sound quality, we would strongly suggest that you spend that extra money to purchase a good external amplifier. Not only will an amplifier improve the quality of the entire system, it will also give you the flexibility to add or remove speakers and subwoofers to your system as you get more and more comfortable with car audio technology.
Building sound systems is an addictive hobby, so having the flexibility to build, improve and downgrade systems whenever you feel the need is a great option to have.
What Will I Learn? Is an External Amp a Necessity? I'll go to a junkyard and get a new harness, and use those connectors that connect into an existing wire, and allow you to add a new one. I just could not resist taking a stab at your commit though. And the taking the dash out?
I've done it in my car in under 9 minutes. I'll get in a wreck if I have to keep fiddling with all my CD's! I tried to play Nelly- 1 on it, and it sounded horrible to me, no bass. I popped in the CD that had the same mp3 on it, and I felt the bass vibrate my seat, like usual.
Thread starter BodegaBay Start date Oct 18, JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Mar 27, 1 West Coast. I love music and SQ through my Eclipse head unit. Why dont you just buy a screen and a DVD changer? Thanks PTDM. Aug 28, 5, 2 Sin City. It is the DV The more I think about it the more it make sense.
May 3, 14 0 LA. I kinda of did something like that.. I have a avic-d1 and a alpine
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