Question about Kenwood KDC-MP4028 CD Player

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Battery keeps going dead

Need to know how to wire CD player properly so the memory does not go dead and the battery does not go dead

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Check your yellow wire must be connected to the earth

Posted on Jul 12, 2008

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I have a R 93 ami jukebox and keep haveing error codes 1and4 what do they mean


Error 4 means the memory backup battery inside the Central Control Computer is dead or very low. Error 1 means factory defaults are being loaded due to a dead battery.

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My cd changer kept changing cd on its own. Now my battery is dead. Is the cd player the cause for the dead battery, or did the cd player malfunction because the battery was dying?


With the low current draw that a cd unit uses It would take some hours to affect a good battery. Remove the fuse for the cd unit and have a battery shop check the battery for a bad cell ( Load test on the battery). Pull the cd player and have a tecki look at it as I feel you have 2 faults not connected.

Feb 17, 2013 | Hyundai XG350 Cars & Trucks

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Newly installed in a camper from the leisure battery,power to the unit and will load the cd then the unit goes dead.Press the eject button and the unit illuminates and ejects and again goes dead


Do you have power going to both the red and yellow wires? The red wire generally goes to a switched power source and the yellow should be constant. Both wires need to have power going to them in order for the unit to work properly.

Nov 01, 2011 | JVC KD-S6060 CD Player

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How to set radio stations


if you don't have all the power wires hooked up it won't save the stations, you should have a low volt wire just for memory status.

Aug 24, 2009 | Panasonic CQ-C5310U CD Player

1 Answer

Drained battery


you may have damaged the battery and may need a new 1 and also check the wireing on the dash board as the perminant live which is the yellow wire could be connected to the live which is the red wire on the radio which keeps the radio on even if the keys are out the ignition

Jul 05, 2009 | Panasonic CQ-C7301U CD Player

1 Answer

I dont know which wire in the memory to connect it to my after ma


The memory wire is usually the yellow wire in the harness - it goes to a constant 12v (battery) source. That's how the cd player remembers all of your presets. The red wire (the other power wire) is connected to a switched 12v source, so it only sees power when the key is on. That is why the cd player shuts off when you turn the key off.

Mar 27, 2009 | Pioneer DEH-1600 CD Player

1 Answer

Forgot how to wire my american legacy la190 240w 2 channel amplifier to my car ?


You need to pick up some wire. 1x Red-power with a fuseable link. 1x Black-ground, 1x 2 conection RCA wires, that will be of length to come from the back of your cd player to the place of your amplifier. and a single wire preferably BLUE to run from the MEMORY WIRE that is BLUE also and will be most likely marked on the back of your cd player. If you are trying to install this onto a stock car cd player, you only have a 10% chance it will work, because most stock stereos do not come with a RCA output jack on the rear. This set of wires can be purchased in a pack from any Walmart or car audio center.

Now take the RED WIRE With fuseable link and connect the end with the fuse to your Positive battery terminal. Now heres the hard part, you need to run this wire from inside your engine bay to your Amplifier most likely in your trunk, and to do so look for a Rubber grommet or any entry point from there into the car. After running the wire into the car, the running boards on the floor can pop out with a few screws and run the wire under the carpet, all the way to your Amp. After doing so leave that wire. Now you need to lift up your trunk floor mat and spare tire cover and look for a decent bolt that touches bare metal. THIS IS WHERE YOUR GROUND MUST GO. The ground - will need to have a good contact with metal because the amplifire recycles its energy out of the car. Now, you need to run the RCA cables and you need to run the MEMORY WIRE, this will cause you to take out your cd player and look at the back. Insert the RCA cables into the red and white holes that say Audio out or SUB OUT. Then you need to hook up the blue MEMORY WIRE from the back of the cd players harness to your Amplifiers MEMORY Port. After running all these wires the same way back as your power you can now hook up your Amp. The 12v+ needs to be hooked up to your RED POWER WIRE. MAKE SURE TO DISCONECT FROM BATTERY 1st!!! The ground wire will go onto the GROUND or - terminal on your amp. The memory insert should be between the power and ground or on the other side of the power. IT HAS TO BE HOOKED UP FOR YOUR SYSTEM TO WORK! the memeory wire is the on switch. Now plug into the RCA wire to the AUDIO IN, and your almost their. you need 2 wires for each speaker you use on this AMP. 1 + and 1- ... Run the speakers to their marked destination and your done. EVERYTHING NEEDS TO BE SCREWED IN TIGHT, use Oval wire clamps to make this a easier prosess. Now re-connect your battery and go to your cd player. ADJUST YOUR SETTINGS TO MAKE the best possible quality and turn it up. GOOD LUCK AND if this DIDNT AWNSER YOUR QUESTION PLEASE LET ME KNOW. Thank you and keep on asking questions

Sep 11, 2008 | Legacy Car Audio & Video

1 Answer

JVC car radio/cd player wont switch on


As a sanity check run a temporary wire directly from the battery positive to the radio. Twist the red and yellow wires together and connect it to the wire from the battery. If this works either your red or yellow wire connection under the dash or to the harness is not hot like you think. Yellow usually goes to a constant 12 volt source (to keep radio memory) and the red wire to 12volts when the ignition is on. In some radios this is reversed. The test I mentioned will determin if the problem is in the wiring or the radio.

Jun 18, 2007 | JVC KD-S570 CD Player

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