Question about Kenwood KAC-7204 Car Audio Amplifier

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My blue light on my kenwood amp wont come on - Kenwood KAC-7204 Car Audio Amplifier

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Posted on Jan 02, 2017

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SOURCE: my kenwood kac7201 amp wont turn on but it has power to it

Recheck the voltage precisely like this:

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Posted on Jan 22, 2008

Professor_V
  • 92 Answers

SOURCE: my kenwood amp wont turn on all the way i just

REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL DOES NOT POWER UP, VERIFY THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN TRY AGAIN. IF STILL NOT POWERED UP, MEASURE THE REMOTE WIRE VOLTAGE TO INSURE THAT IT IS NOT LOWER THAN 11 VOLTS. IF YOU CANNOT MEASURE IT, THEN DISCONNECT THE REMOTE LEAD FROM THE AMPLIFIER AND TEMPORARILY INSTALL A JUMPER WIRE FROM THE POSITIVE POWER TERMINAL TO THE AMPS REMOTE TERMINAL WHICH WILL FORCE IT TO TURN ON. IF IS STILL DOES NOT POWER UP, THEN IT WILL HAVE TO BE SERVICED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Posted on Jan 06, 2010

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1 Answer

On my kenwood KAC-8105D mono 1000watt amp, the blue light is out and my subs are not getting any power? What does this mean? what does the blue light mean??


Well normally a light near the controls and or where you put the wires for subs is the continuous power. There is a wire from the back of your stereo that need to be ran to the amp. It tells the amp when to turn on and off so it doesnt drain your battery.

Jun 06, 2011 | Kenwood KAC8105D Car Amp

1 Answer

My kenwood amp wont turn on all the way i just hooked it up to my truck. the blue lights and the fan come on but the red light wont come on to power my subs


REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL DOES NOT POWER UP, VERIFY THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN TRY AGAIN. IF STILL NOT POWERED UP, MEASURE THE REMOTE WIRE VOLTAGE TO INSURE THAT IT IS NOT LOWER THAN 11 VOLTS. IF YOU CANNOT MEASURE IT, THEN DISCONNECT THE REMOTE LEAD FROM THE AMPLIFIER AND TEMPORARILY INSTALL A JUMPER WIRE FROM THE POSITIVE POWER TERMINAL TO THE AMPS REMOTE TERMINAL WHICH WILL FORCE IT TO TURN ON. IF IS STILL DOES NOT POWER UP, THEN IT WILL HAVE TO BE SERVICED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Nov 20, 2009 | Kenwood KAC-7203 Car Amp

1 Answer

Amp will not come on ,no light


Yes!!!!!!!!!! Your remote wire is what tells your amplifier to turn on and off it won't work without it. Assuming your stereo headunit is an after market unit it has the correct wire for this. what you have to do is pull out you headunit, and in the back of the headunit where all the wires plug into your unit there is blue wire with a white stripe. this is the remote turn on wire. connect a wire to that blue n white wire and run it back to your amp, insert it into to the spot marked remote. turn your head unit on and your amp will power up... if you have all the rca cables hooked up your amp should be ready to go.... btw good choice on the amp, kenwood is the way to go!

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1 Answer

Kenwood KAC-8103D Power Amplifier wont turn on


it sounds to me like its burnt.but with some amps the screws that hold it in place have to be screwed into the car chassisfor grounding. be careful not to srewe into hidden wires.

Apr 14, 2009 | Kenwood Car Audio & Video

1 Answer

Kenwood KAC-8401 light goes from blue to red when turned on


Either the amp is ad or the sub got shorted? You can check itby disconnecting the Sub and seeing if the amp comes on blue then. If yes, then the sub is shorted. If no, then the amp is shorted. Also chck the voltage AT THE AMP. Make sure that it is above 12 Volts.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html

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1 Answer

Kenwood kac-5201 amp


12 VOLT FROM THE BATTERY SOURCE GOES TO 12VOLT BATT CONNECTION.12 VOLT GROUND RETURN MUST BE FIXED TO THE FRAME OF THE VEHICLE.SOME VEHICLES HAVE FACTORY GROUNDS UP HIGH ON THE SIDES OF MOST VEHICLES, U CAN USE THIS GROUND LOCATION. IF CONNECT REMOTE WIRE FROM THE RADIOS REMOTE TURN ON LEAD WHICH IS A BLUE/WHITE WIRE OR A STANDARD BLUE IF ITS JUST ONE BLUE WIRE. CONNECT THIS LEAD TO THE REMOTE TURN ON CONNECTION ON THE AMP , SOME KENWOODS HAVE TWO ,INPUT AND OUTPUT LEADS.U ALSO NEED A TEST LIGHT, OR U CAN USE A SPEAKER TO TEST FOR POWER AT UR CONNECTION.IF U USE A TEST LIGHT , CLAMP THE END U WOULD GROUND TO THE VEHICLE, TO THE AMPS GROUND, THEN TOUCH THE PROBE END OF THE TEST LIGHT TO UR WIRED CONNECTION TO VERIFY U HAVE POWER AND GROUND TO YOUR CONNECTION.IF TEST LIGHT DOESN'T WORK ,CHECK UR FUSE AND REMOTE TURN OR LEADS.

Sep 02, 2008 | Kenwood KAC-5201 Car Audio Amplifier

1 Answer

Wiring instructions for kenwood kdc-mp8533


dark blue is the remote for the amp
light blue is the remote for a power ant. (or amp)
orange is for the light dimmer (when you turn your lights on it will not be so bright, optional)
black is ground
brown is if you have a button in your car for a cell phone it will mute it when pushed (optional)
red is power (acc power)
yellow is always on power(for the clock and presets)
the rca jacks are for the amp they should be used if using an amp (there wattages are preset for amps anyway)

hook up the rca's to your amps along with the dark or light blue wires and when you turn the stereo on the amp will come on everything else should be hooked up as stated above. Hope this helps.

Jun 08, 2008 | Kenwood KDC-MP435U CD Player

1 Answer

My kenwood kac7201 amp wont turn on but it has power to it


Recheck the voltage precisely like this:

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Jan 22, 2008 | Kenwood KAC-7201 Car Audio Amplifier

1 Answer

Kenwood kdc-mp528 amp/speaker problem???


This is a common mistake. This problem indicates that you are using the solid blue wire from the head unit to the remote turn-on on the amp. This is a power antenna wire that only receives power when on FM radio. You need to replace this with the Blue & White wire from the head unit (power control wire) to your remote turn-on on your amp. This should solve your issue.

May 12, 2007 | Kenwood KDC-MP528 CD Player

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