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If your JVC head unit AV is not turning on and you're getting no sound at all, there could be several possible causes. Here are a few troubleshooting steps you can try:
Check the power source: Make sure the head unit is properly connected to the power source and that the fuse is not blown. If the head unit is not getting power, it will not turn on.
Reset the head unit: Sometimes, a simple reset can solve the problem. Look for a small reset button on the front or back of the unit and press it with a pointed object like a pen or paperclip. If there is no reset button, you can try disconnecting the power source for a few minutes and then reconnecting it.
Check the wiring: Make sure all the wiring is properly connected, including the ground wire. Loose or damaged wiring can cause the head unit to not turn on or produce sound.
Check the speaker connections: Make sure the speakers are properly connected to the head unit and that the wiring is not damaged. If the speakers are not properly connected or the wiring is damaged, you will not hear any sound.
Try a different source: If you're using an external device, such as a CD player or MP3 player, try a different source to make sure the problem is not with the external device.
If none of these troubleshooting steps work, the problem could be with the head unit itself and it may need to be repaired or replaced.
is this a new install.
if yes, buy the adapter harness, all auto stores sell this.
makes connections easy and has ,"instructions"
the red wire to the new head is red, and most go to the correct
harness wire, for radio power, on the geo that is RADIO fuse.
that goes to ignition on , connection. so fuse must be hot.
and key on. and radio grounded (black) to play
your car is a toyota corolla in snake skins. (badged)
Also If you had a flat battery the cat might need to be recoded for whichever speaker system and head unit are installed. Btw this is vw stock audio system right. If not you might be missing required wiring harness to make it compatible or an uadaptor to ensure a 3rd party head unit is compatible. Pictures of the head unit and the fuse boxes would help but also a video of what happens when you Try to use the functions so we can see exactly what happens. Also investing in a fuse tester would be well worth it and I can find the fuse assignments for your car but I need the car year the model the engine size and if it's 4 motion or not. Also check the date manufacture for your car in the front section of the instruction booklet. Otherwise giving your Vin can help me search through vw Elsa win program and also I have an account at Mitchell diy with the electrical guides and can post the appropriate fuse and wiring diagrams for your car and the wiring from head unit along with which fuses or relays are related.
Make sure you've run your ground wire properly and the connection to the battery is sound. Check that the wire ends are clean and rated for your amp and woofer. Make sure you have a ground wire running from the amp to something metal on the car so the system is well grounded. Check that your switch wire running to the head unit is tapped into the correct wire such that when that wire is active(I.e. Head unit powered on) the amp also turns on and relays the signal to your woofer. Buying a wiring kit is the easiest way to do all of this as most come with all necessary wires, color coded, with instructions if you still can't figure it out.
The head unit should have a RCA Sub Out. The RCA wire goes to the Sub Amplifier, along with power, ground, and a blue remote wire from the Head Unit. Next, the Sub Amp is wired to the Subwoofer with speaker wire. Without an amplifier your sub won't make any noticeable sound.
If the rear speakers worked before your new head unit was installed, then the first question is does your new head unit have the facility to feed four speakers. Some systems will only power two speakers. The Audio Shop should have rectified the fault - you paid for the installation and as the customer you have a reasonable expectation that they would do it properly and ensure that all of the existing speakers were functioning properly. It would be worth challenging them again - if they refuse you could go to Citizen's Advice Bureaux or the nearest Trading Standards Office. Alternatively, try tracing the wires back from the rear speakers to the head unit - are the wires connected up properly... at both ends (i.e., the speaker end and the head unit).
The audio shop has probably hard wired the head unit because the sockets in the back of the head unit were not compatible with the plugs that came as standard with the car. A Haynes Manual or equivalent will give the colour codes for the various wires for the audio system.
Very simple. DIN size head units fit without any adapters (assuming your car has the DIN size factory radio with pocket underneath {I have '93 Paseo and this was the setup of mine, though Crutchfield.com shows option of factory stereo with pocket and without [guessing there was a double DIN size option]}). All you need is a wiring harness. I've seen these anywhere from $5 - $20. This will connect to the wires on the harness for your new radio, then instead of cutting any of the factory wiring, you simply plug the factory harness into this new socket.
The trim ring around the radio/climate control/ashtray area is held in with clips. It just pops out (may have to use a thin screw driver to get your fingers under one of the edges to start). Four screws hold the metal frame where the head unit, climate control, and ashtray are. Take those out and pull the metal frame out a bit, then disconnect the wires of the climate control, power lead to lighter, and stereo harness and antenna. Two screws per side hold the stereo in to the metal frame. Take those out, slide out the factory radio and put in your new head unit (You will not use the metal cage or any other mounting brackets the head unit may come with). The holes on the metal frame should line up with mounting holes on the side of your new radio.
Not to endorse one vendor over another, but Crutchfield.com supplies instruction sheets and any needed install accessories free with purchase of new head unit. Their prices are often slightly higher than you can find elsewhere (comparable to retail stores, usually more than online stores), but you get the wiring harness and instruction sheets for your vehicle. At the very least, you can use their site to see what fits your vehicle (Note: Many other stores do this as well.)
hi there. I am not sure about the speakers. But there is a wiring harness available for a aftermarket head unit. I have a '97 sentra the base model XE version. I have just put in an alpine head unit and you defenately hear the difference even on factory speakers. But you will need 2 kits to install an aftermarket head unit in the car. 1. A dash kit. I got mine from canadian tire for about 20 bucks, it comes with instructions on how to put it together and its straight forward, just make sure u get the one for your year and make of car.
2. The wiring harness. there available at mostly every car audio place for about 10 bucks. again make sure u get the one for your year make and model of car. installing this is difficult so unless your good at electronics get it professionally installed. you have to splice the wires into the back of the aftermarket unit, then the plugs plug right into your existing factory car harness.
hope this solves your problem, the dash kit is easy to put together and install into the car, but the wiring harness is a bit difficult, i had my harness installed for about 40 bucks and u save money if u put the dash kit togehter yourself because thats 1 less thing they have to do. good luck.
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