20 Most Recent Visonik V418XT 125W x 4 Car Amp Car Audio Amplifier Questions & Answers

Do any of the channels produce sound?

This usually involves removing the plastic bezel around the stereo. Sometimes these plastic bezels hold some buttons for air conditioning and heat, as well as the hazard lights button. These plastic bezels usually are just snapped in with metal clips on the back of them. You can pry them outward and with a good yank they will pop out. Once you have the plastic bezel around the radio removed, there will be 2-4 screws on the sides, or top and bottom. Once you remove those, the whole radio will pull right out of the dash. Then you have to un-clip the wire harness from the car, and unplug the antenna cable. If you plan on putting a different stereo in the car, KEEP the mounting bracket around the stereo, as well as the "wiring harness" that was used to plug into the vehicle harness. That will save you about $50 in parts to put a new stereo in.

To be absolutely sure of which terminal is positive and which is negative, we will use a 1.5 v battery to have the speaker react as though it is playing music.

* special note * do not use any more than 1.5 v as it may damage the speaker coil

As we know, batteries are marked positive, negative, or both ... we will use this to our advantage when hooking up the battery to our speaker.

To start the process, temporarily attach a short piece of wire to each terminal of the speaker (be sure to either use wire that is marked, or wire of differing colours to help determine which terminal is which). In our example, we used standard speaker wire which is "polarized" (one wire is made of copper and the other is made from tin .. interestingly, this serves no electrical purpose)

Once you have connected the wire to your speaker, proceed to briefly touch the free ends of the wire to the battery terminals (as shown below). In some cases, extended contact with the battery has caused cancer of the voice coil (ie. blown speaker)

If the speaker moves OUT when the battery is first connected, the battery is connected in proper alignment. Be sure to take note of which wire is connected to the positive terminal of the battery as this is your speaker's positive terminal.

Hello sir hi, the black wire is standard color for ground. if you are wiring a speaker, the wire is really not that sensitive, interchanging the wire only makes the sound drop to about 2%, barely not noticeable.

Hello lilgeiger111,

If you have checked all of the wiring and fuses and the amp does not power up, it's blown.

Hope this helps.

The radio code is a security feature that's meant to deter theft, and it's unique to each vehicle. If you've lost your code, you'll need to contact a Nissan dealership or service center and provide proof of ownership. They should be able to help you retrieve the code. Please do not attempt to use codes from the internet as incorrect attempts may lock your radio.

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