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I connected a sony radio to my focus, with no protection on the wires. the radio soon stop working i took it back and had the radio tested and it works in the store. why can't i get it back on now

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Bare wires??? big no no!!!!! you need to check your factory radio fuse i am sure you blew it.

Posted on Oct 01, 2008

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Speaker kept working on an off wen i turned a corner then one day completlety stopped working none of my other speakers work but my sub still does been told its gone into protection mode just wanting to...


It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. Now disconnect the speakers and test, if the protect is off then check for short on the speakers.

It is possible that the speakers or speaker wires are shorted to the ground - as it was disconnecting when the car moves. So remove the speaker connection and see if the amp resets.

Jul 22, 2011 | Car Speakers & Subwoofers

1 Answer

My stereo says" protect" everytime i turn it on. can't get anything else.


Hello grammagrisbo, hi your Kenwood head units will show "protect" when there's a problem with the speaker outputs so check to see if the impedance load meets your radio, 8ohms or 4 ohms?. having parallel two speakers on a single channel may cause this dilemma. This might also mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back to normal, the next time you turn it on.
If it's staying in "protect", then you'll definitely have to remove the stereo and do something to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:

Pull the Kenwood unit from the dash and disconnect all the speaker wires. power it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker only. Turn it on again and see if it will displays "protect" message.

If the radio works with one speaker connected, connect the other speaker to the second channel, you may have now the idea where the problem begun, you will identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that channel.

If it displays "protect" with a single speaker connected, then disconnect that one and try the other one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit.

Aug 31, 2010 | Kenwood Car Speakers & Subwoofers

1 Answer

MY KDC-MP3342U SUDDENLY STOPPED WORKING! IT JUST KEEPS FLASHING ...'PROTECT'! REPEATEDLY! HELP!


Protect only comes on when an RCA is grounding out, speaker is blown or the speaker wires are shorting out. Check all your wiring on the head unit and see if all are insulated with tape or better and if there's an exposed wire, tape it up. Make sure that all connections are secured. Then double-check your fuses. Check all of your speakers and their wiring because going into protect mode is the units way of saying you have a problem with your speakers or wiring.

If your speakers and wiring all check out, disconnect your radio wiring harness, and then reconnect the harness. This resets your radio, and your radio should be working again.

If you need to enter the security code, try the default unlock code of 5227.

You can also try to reset your code if the default doesn't work. Try 'KCAR' or '3051'.

Jul 12, 2010 | Kenwood Car Speakers & Subwoofers

1 Answer

Backfeed problems


back feed can be caused by running your rca's beside your power wire, and if you don't have your remote wire connected properly your amp might not turn on, or off depending on the amp. it could also be your power wires (acc and constant power) on your deck are mixed up, you would be able to tell if it cant remember the time

Mar 17, 2010 | Sony Car Speakers & Subwoofers

1 Answer

I have just recently installed a cd player in my 1990 Mitsubishi Triton dual cab. i couldn't find a constant power source so i took the clock out and used its constant power it was working for a week but...


okay u will have to start all over..with the istall...it is best that u pick up a afermarket wire harnest ...and that wiill help u alot ..make sure that u remove the radio and connections ...replace all bad fuse from the fuse box....make sure work's the clock and interior light....u need a good ground with the black wire ...u must have a good batter 12v with the yellow wire...and a good 12v Igniton red wire.

May 05, 2008 | Car Speakers & Subwoofers

8 Answers

Kenwood car stereo KDC-W3534 : warning message PROTECT


i had the same problem and i just disconnect the battery and and reconnect it and everything works fine!! try it

Dec 19, 2007 | Kenwood KSC-310CCS Center Channel Speaker...

6 Answers

How to bypass video nav cd override


If its an aftermarket device, it has a sensor that is connected to the electronics of the vehicle to indicate that it is parked. Check the wiring, find the wire and move it to something that is always on, radio, a/c controls, etc. Best of Luck.

Sep 13, 2007 | Kicker Solo-Baric L7 S15L72 Car Subwoofer

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