Question about RCA Car Speakers & Subwoofers

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Rca leads from car head unit to amp have been cut off at one end purchased new connectors not sure how to attach them the rca cable has 4 coloured little wires and bare wire inside cheers

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Hello need more info u may have to buy criming tool....give a call at 559-301-5942 cutom mobile install

Posted on Jun 22, 2008

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New in dash reciever, have sub woofers, they turn on but are not working


There are a number of issues that could be going on here. Go down this check list.

1. Check to make sure your head unit is getting power
2. Make sure the volume is up and that you do not have the unit on mute


The following list is if you have an amp (I assume you do if you have subwoofers).

1. Make sure the RCA cables are plugs to the correct outlet RCA's on the unit.
2. Make sure the RCA cables are not crimped at any point on the way back to the amplifier
3. Make sure the power and ground are good on the amplifer and that the remote turn on is functioning (this will turn the amp on).
4. Make sure the RCA cables are plugged into the right place on the amplifier.
5. Check the gain levels on your amp. This is a dial next to the RCA input. You will need a small flat head screwdriver to adjust.
6. Make sure the subs are wired correctly. If they are wired to the wrong ohms load they may cause the amp to go into protection.


If this doesn't help, you may need to get more specific in your next post.

Aug 18, 2011 | Car Speakers & Subwoofers

1 Answer

LED lights up but! ???


Sounds like there is a problem with the amp. Try switching the inputs around for that output on the amp. If that does not help, Yes I would have to say that there is a problem with the amp output circuit.

Nov 06, 2007 | Infinity BASSLINK Car Subwoofer

1 Answer

How do you connect the amp with the stereo


  • Choose where to put your new amp. If you are installing subwoofers it's usually best to put the amplifier in the trunk next to or attached to your subwoofer enclosure. If you are going to power your main car speakers with the amplifier then it may be better to put the amp under the passenger's seat.

  • 2

    Purchase the following wiring for the amp: A thick power cable (the thickness required depends on the total wattage of your amp, ask a sales rep or consult your amplifier's manual for the proper gauge) that will have to reach from your battery to the amp (the power cable should also have an inline fuse to protect the amplifier); 3 feet of ground cable of equal thickness as the power cable; an RCA signal cable to carry the left and right signals from your head unit to the amp; a "remote on" wire which can be any thin wire (20 to 24 gauge) that will also run from the head unit to the amp; speaker wire (if you are powering subwoofers you should only need about 3 feet of 12-gauge wire per sub, if you're going to power your main speakers you will need enough 16-gauge wire to reach each speaker from the amp, 12 feet per speaker is usually safe).

  • 3

    Gather the following tools: Screwdrivers, wire cutters, wire strippers, pliers, a utility knife, sandpaper, masking tape with a pen for labeling, 2 crimp-on o-ring ends for the power and ground cables. If you're hooking the amp to your speakers, you'll also need 2 crimp-on female spade connectors for each speaker.

  • 4

    Find a manual with instructions on taking off the dash of your car (not the whole dash--just the head unit, in order to hook wires to the back), and also to get at your car's speakers if you are hooking the amp to them.
    The Installation

  • 1

    Disconnect the ground (negative) cable from your battery. Never work on the electrical system of your car with this connected.

  • 2

    Attach the side with the fuse of the thick positive (+/red) power cable to the connector on the positive terminal of your battery; the o-ring can be sandwiched in the bolt on the connector that connects your car to the battery. Now put the fuse in the fuse holder.

  • 3

    Run the power cable through the firewall of your car (there is usually an opening on the driver's side) and to your amplifier. If your amp is in the back it is usually best to run this wire under the plastic molding that goes along the bottom edge of your car. Be careful where you run the wire because the power cables should never be near the signal or speaker wires.

  • 4

    Find a metal bolt or screw on the metal of your car near the amp to connect the ground cable to. This should be as close to the amp as possible, never more than 3 feet. Unscrew it and clean the metal surface with sandpaper. Attach the ground to it with the o-ring and screw it back down firmly.

  • 5

    Remove your head unit and run the signal and remote on wires from behind the head unit to your amp. Connect the RCA connectors and the remote on wire to the back of your head unit.

  • 6

    (If you are installing subwoofers and not running your normal speakers off the amplifier skip to step 7.) Run the 16-gauge wire from each one of your speakers to the amplifier. On the amp side use the masking tape to label each wire so you know which speaker it is. On the speaker end-strip a 1/4 inch off the ends of the wires and crimp on the female spade connectors with your pliers. Connect the spade connectors to your speakers making sure to match the positive (+/red or white) with the positive terminal and the negative (-/black) with the negative one.

  • 7

    Connect everything to your amplifier. Only strip off as much as you need off the end of each wire to make a solid connection, you don't want any exposed wire hanging out. If you have subs, attach them to the amp with the 12-gauge speaker wire.

  • 8

    Secure your amp to something. If it is in the back you can screw it directly to your subwoofer enclosure. If it is under a seat you may just want to get some straps that hold it down.

  • 9

    Reconnect your car's negative cable to the battery. Test your system and make sure everything works, going around to see that every speaker is on before you put everything back together

  • Feb 17, 2011 | Car Speakers & Subwoofers

    1 Answer

    Need wiring diagram


    Step 1 Understand the basics of all car stereo systems. A car stereo system consists of 4 main components and the wiring that connects them. These are the head unit, the main speakers, optional amplifiers and the subwoofers, which are also optional but generally considered a necessary part of any good system.
    Step 2 Know that the core of any car stereo is the head unit, which is the cassette or CD player that goes in the dash. All the other components are connected to the head unit by at least one pair of wires.
    Step 3 Know about car speakers. The main speakers are usually 2 in the front and 2 in the back, although with what are known as component speakers, each speaker is broken down into two speakers: one for the highs and one for the bass. Each speaker or speaker set (known as a channel) connects to the head unit via a pair of wires. Generally if you are installing a new head unit you want to install new speakers.
    Step 4 Know about amplifiers. Amplifiers provide extra power to your speakers and/or extra channels of power for additional speakers. The most common use for an amplifier (amp) is to power subwoofers. The amp connects to your head unit via an RCA cable and often a "remote on" wire, and also connects directly to your car battery through a fused "hot" wire and to the car's chassis with a short ground wire. This article assumes the use of a single amplifier connected to a pair of subwoofers. If you do not have these components simply ignore the steps specific to the amp, doing so will not affect the rest of your installation.
    Step 5 Know about subwoofers. Subwoofers are part of any good stereo system. They provide the deep bass that small speakers cannot achieve. Subwoofers are connected to the amplifier which can usually be mounted right to the subwoofer box. If you do not have subwoofers you can simply ignore the steps specific to them.
    Preparing for the installation
    Step 1 Be properly prepared. This is extremely important since you do not want to realize you're missing something in the middle of the installation.
    Step 2 Purchase the following: A car stereo wire harness which connects the existing wiring for your old head unit to your new one (this will be specific to BOTH the model and year of your car AND to the make of your new head unit); an amplifier wiring kit which will contain all the wires to get power and signal to your amplifier; six feet of 14-gauge speaker wire for the subwoofers. Your speakers should have come with their own speaker wires.
    Step 3 Obtain a guide to removing the dash, doors panels (or whatever compartment the speakers are in), and floor molding of your car. You may be able to find a guide for this online. If not, you can get a repair manual for your car at most automotive stores and online).
    Step 4 Gather the following tools: Screwdrivers to fit the job, pliers, wire cutters, wire strippers, a utility knife, sand paper or a file, electrical tape, a 9-volt battery, and any other tools that the instructions for installing the head unit and your car guides specify.
    Installation Process
    Step 1 Disconnect the ground (negative) cable from your battery first and foremost. NEVER work on the electrical system of your car with this connected.
    Step 2 Install your new speakers. Start by removing the paneling of the speaker enclosure. Unscrew and disconnect the old speaker.

    Ideally the speaker wire will be connected to the old speakers with a metal clip that can then slide right on to your new ones. If not, cut the wire off the old speakers, strip about half an inch of it, then cut the last 6 inches or so off the speaker wire that came with your speakers so you have the proper connectors with a little wire attached, strip a half inch of those wires and twist connect them to the existing speaker wire. Bend the twists so they are in-line with the wire and wrap each connection in electrical tape so no wire is showing to protect them.

    Attach the connectors to your new speaker. Make sure to connect the negative wire (-/black) to the negative terminal on the speaker and the positive wire (+/red or white) to the positive one. Screw the speaker in place. If you have component speakers, and therefore a crossover, make sure the crossover is secured in the speaker compartment so that it does not bounce around while you drive.

    Wait to put the speaker enclosures back together until you have installed the head unit.
    Step 3 Follow the instructions you got for removing whatever part of the dash covers it and take out your existing head unit. Connect the car stereo wire harness to the connector that was attached to your old radio and attach the other end to your new one. Connect the antenna cable (the single wire with the big plug at the end) to your new head unit as well.

    If the speaker wires are separate from the harness connect them using the method of stripping, twisting, and taping described above. Do this one at a time or use masking tape to label the wire to avoid confusion. If you are having trouble figuring out which wires go to which speaker or which is positive and negative read the tip at the bottom of this section.

    Do not put your new head unit into the dash yet-you still need to connect the amplifier to it. Put the speaker enclosures back together now.
    Step 4 Attach the thick positive (+/red) power cable for your amplifier to the connector on positive terminal of your battery. The kit you purchased should have come with an o-ring on one end of the wire (you may have to crimp it on yourself, if so do it on the end with the fuse), this ring can be sandwiched in the bolt on the connector that connects your car to the battery.
    Step 5 Put the fuse in the fuse holder.
    Step 6 Run the power cable through the firewall of your car (there is usually an opening on the drivers side) and along to the back of the car where your amp is. It is usually best to run this wire under the plastic molding that goes along the bottom edge of your car, you never want the power cable to come near any speaker wires. At the same time run the remote on wire (a really thin wire from the amplifier wiring kit), through the dash where the head unit will sit, along with the power cable to the amp.
    Step 7 On the other side of the car run the RCA signal cable through the dash from the head unit to the amp (it's a pair of wires together with connectors on each end).
    Step 8 In the back of the car pick exactly where your amp and subwoofers are going to go. Part of choosing this is that the thick black ground cable (negative) needs to have a place to connect to the metal frame of your car. This should be as short as possible, you never want the ground cable to be longer than 3 feet.
    Step 9 Find a good screw or bolt, take if off and sandpaper the metal surface that the o-ring will make contact with, then screw it down tightly.
    Step 10 Attach the RCA signal cable and the remote on cable to your head unit and attach the power, ground, RCA signal, and remote on wires to your amp.
    Step 11 If you have not already done so, place your subwoofer box in the trunk and attach your amplifier to it if that is what you are doing. If you are not going to screw your amp to the subwoofer box then it must be secured to something else.
    Step 12 Attach the 14-gauge speaker wires to the left and right channels of the amplifier and to the speaker connectors of the subwoofer box.
    Step 13
    Mount your head unit into the dash. Double check all of the connections on the back of it to make sure they are secure. Then slide your head unit into its slot in the dash and screw it securely in place. Before you re-attach the dash, reconnect the ground (negative) cable to your car battery and turn the stereo on and move around the car listening to each speaker to make sure everything is working properly. Then put the dash back on. That's all!

    Good luck.

    Mar 26, 2010 | Car Speakers & Subwoofers

    1 Answer

    1000 watt rms americanbass class d mono amp good choice for 2 kicker dcvr122


    not a bad amp by any stretch. they do carry a little more thd then some of your higher end amps but should do the job. you did not mention what type of other gear you are running with? your head unit needs seperate sub out rca, prefer 5 volt+ for cleaner stronger signal but any will work. you might want to purchase a good 1 farad cap run at least 4 ga if not bigger cable ( im running 00 gauge on 1500 watts to 4 momo 12's) make sure you have same size ground wire to an excellent ground source. not sure about your crossovers either, im running 2/3rd octave phoenix gold from the old days i swear by them. all that and a good box will help greatly. routing your wires the proper way and using higher end cables will help greatly also. happy beating, any more questions just ask and i do what i can to help. BOOM ON

    Feb 27, 2009 | Kicker DCVR122 -- 2 Ohm Dual 12in CompVR...

    1 Answer

    I need to install a max385vd in a 2002 pord f-350, do i need an install kit?


    Regardless of whether this is an amp or a head unit, an install kit is either very helpful or necessary. If it's an amp, you'll need it for sure - you can't power an amp with 18 gauge factory power wiring like a head unit can use. You need to get at least 10 gauge power and ground wire, 18 gauge remote turn-on wire, and RCA patch cables to conduct the sound. If you have a factory head unit, you'll also need a line-level adapter to give you a source for the RCA patch cables.

    If this is a head unit, you'll need the adapter harness to plug your existing stereo harnesses into the new head unit. It makes it simple - the wires on the new head unit are color-coded for what they do, and the adapter harness is identically coded. Match the colors, then plug it in. You may also need an antenna wire adapter (some cars require this).

    Aug 10, 2008 | Clarion Car Speakers & Subwoofers

    1 Answer

    Power on green light is on but no sound when speakers are hooked up


    Light is on so suggests power, earth and remote turn on cable all ok. Now you just need to test the RCA signal and the AMP output. I take it you have used low level RCA as the input from the head unit? (two cables usually red n white although can somtimes be other colours) best way is with substitute amp n speakers etc although can be done with osciliscope or headphones. Once it is established the RCA signal is fine then you can check the speakers from the amp. disconnect them at the amp and put each of the two wires briefly to a battery, any battery will do e.g. 9v PP9 or 1.5v AA etc you should hear a pop from each speaker as you do it. that proves the speakers and wiring to them.
    If there was no signal from the RCA the cables may be bad - requires testing from head unit to amp
    failing that the RCA output may be reduced or turned off via a menu in the head unit
    Or the RCA output from the unit may be knackered.

    Sorry its a bit long hope it helps
    Luda

    Jul 04, 2008 | Jl Audio Car Speakers & Subwoofers

    1 Answer

    Where do i connect my amp to my paosonic cq-dfx301u


    On the the back of the unit there will be be a set of rca leads marked pre out run set of rca leads from these to the input connectors on your amp,you will also need to run a single wire from the wiring harness of head unit look for a wire marked remote (usually blue)run this to the terminal on amp marked remote ,you will also need a fused power cable run to battery +and a earth cable - screw this to metal part of chassis ,then run your speaker wires make sure + - symbols on speakers get connected to + - terminals for speakers on amp.

    Apr 20, 2008 | Car Speakers & Subwoofers

    2 Answers

    Car sound system. only sub is giving off sound. other 4 speakers dont work at all


    Could be bad outputs from the back of your head unit or also could be bad rca cables. Make sure the amp is on and powered.

    Dec 13, 2007 | Kicker CompVT CVT654 Car Subwoofer

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