Question about Alpine MRP-M450 Car Audio Amplifier

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I touched my remote wire to my ground wire by accident and now have no light or power. How do I fix this. Is it in the stereo or in the amp

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Posted on Jan 02, 2017

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SOURCE: I accidently put my power wire into ground

my amp power light didnt go on when i hooked it up what could it be

Posted on Apr 14, 2010

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SOURCE: I accidently put my power wire into ground

swith the fuses

Posted on May 14, 2010

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Cant get remote wire to turn on amp. it is running from back of kenwood deck to kenwood amp.


OK ! FIRST THINGS FIRST. DID U TEST THE AMP FIST. BEFORE U STARTED INSTALLING RCA CABLES,AND REMOTE WIRES. LETS DO THAT FIRST.GRAB YOUR AMP.SET IT ON YOU WORK BENCH ,TABLE,OR CHAIR.THEN GET (2)PIEACES OF #10 OR #12 WIRE W/1 OF THE WIRES HAVING A 20AMP FUSEABLE LINK ON IT.NOW THE WIRE W/THE FUSEABLE LINK ON IT.CONN THE REMOTE(REM) AND THE 12v + ON THE AMP AND HOOK THEM BOTH TOGETHER ON 1 SIDE OF THAT FUSEABLE LINK WIRE. AND THE OTHER WIRE HOOK IT UP THE - GROUND SIDE OF THE AMP .NOW PICK UP YOUR AMP OPEN UP YOUR HOOD.MAKING SURE THAT NO WIRES OR THE AMP IS TOUCHING THE + 12V OF THE BATTERY. NOW CONN YOUR GROUND TO GROUND AND THE FUSEABLE LINK ON THE +12v SIDE OF THE BATTERY.NOW THE AMP SHOULD HAVE CAME ON. LOOK 4 A SOLID RED LIGHT OR ANY SIGNS OF A SOLID LIGHT THAT HAD CAME ON.

Feb 21, 2011 | Kenwood KAC-5204 350 Watt Max Power Stereo...

1 Answer

Can you show me a dieagram or wireing up a amp


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The process is pretty much straight forward for any amp.
This is what you will need to get the job done:
15 ft- 4 gauge power wire (RED) with in-line fuse 3 ft - 4 Guage Ground wire (Brown) 15 ft - 12-16 Gauge Remote wire (Blue) 15 ft - RCA Wires Here are the steps:
  • BATT - (Battery +12v) - This will be a 4 guage red wire that you will run directly from your car battery to this Terminal. Be sure to buy a wire a with an inline fuse. This is the main power supply to your amp. Be careful 12 volts doesn't sound like much till you see it in action. I would do this wire last, last thing you want is a hot wire accidentally touching some bare metal.
  • GND - (Ground Wire) - This is the terminal you will use to ground the AMP. Run a 4 guage wire from this terminal and fasten it to some bare metal in your trunk. Not more than three feet.
  • RCOM /Remote - There will be a small gauge wire from the back of your stereo that will be the remote wire it will be blue, most stereos have this wire labeled. Its purpose is to send a signal to the amp to turn on when the radio is powered on.
  • RCA Wires - The location for these is not pictured above, on the back of your stereo there will be amp outputs. Your stereo will send all your low frequencies (Bass) to your amp using these wires. On the amp you will see where these wires will go. They are essential to have a system.
The best way to go about this is hook up the power, ground, and remote and test the Amp to see if it powers up. I have seen so many of my friends skip this step and they paid for it later. I hope this helps if you need any more help let me know.

Nov 25, 2010 | Car Audio & Video

1 Answer

All wires are hooked up but no lights come on, is


Hi Wex,

Wires being hooked up is fine. With no lights coming on the question becomes one of power.

Ground needs to be grounded.
+12VDC should have +12VDC
Remote should also have +12VDC when the stereo is on.

Check these with a volt meter. Negative lead on the ground terminal, Positive on +12V then Remote.

Both combinations should read +12VDC.

Next check the fuses if any that your amp has. Make sure they aren't blown.

Comment back if this doesn't point you in the right direction.

Mike

Dec 08, 2009 | Infinity Car Audio & Video

1 Answer

LED LIGHTS DONT TURN ON


3 Options.
Check your powerwire, and make sure you fuse in your power wire is good and that your getting power.

Make sure you have a good ground. A bad ground will not allow your amp to turn on

Your remote wire that runs from you stereo. Make sure it's connected from you H/U to your amp. If you forget your remote wire(Blue), your amp will not turn on.

Aug 31, 2009 | American Audio VLP300 Power Amplifier Car...

1 Answer

My amp has no power but everything works on it i just pulled it out of another vehical


SAND THE PAINT AWAY FROM WHERE EVER THE GROUND WIRE IS TOUCHING THE BODY OF THE CAR. ALSO CHECK UR REMOTE WIRE ON THE AMP. IF THERE IS NO REMOTE WIRE ON STEREO THEN JUST RUN THE REMOTE WIRE FROM AMP TO THE POWER ON THE AMP

Feb 20, 2009 | Rockford Fosgate P3001 Car Audio Amplifier

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

No power to the amp i touched the power wire to the side of the amp


It probably burned a trace on the circuit board.

With the amp hooked up normally and the head unit on (so the amp will have remote voltage), do you read 12v DC anywhere on the case of the amp (black meter probe on the ground terminal of the amp)?

If there is no voltage on the case, confirm that you have 12v on the B+ and remote terminals of the amp (black probe on ground terminal of the amp).

Aug 25, 2008 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

Sea ray boat Clarion stereo and amp


Unless a fuse is blown, there's a problem with the wiring or you have a defective component, there's no reason the amp shouldn't come on. You need to confirn that you have the proper voltage at the amp.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) 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.

May 23, 2008 | Clarion Car Audio & Video

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