Question about Pioneer GM-5200T Car Audio Amplifier

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Red light on my amp?

Hi I have the GM-5200T 760W amp and I hooked it up recently today and when i started my car, the sub put out virtually no sound. I was able to feel it vibrating a bit but the light on the amp is red. Not blinking, just solid red. my friend told me that the safety is on and I cant seem to find a button for it. My friend also told me to try resetting it by getting another wire with two open ends and touching the ground bold on the amp to the power bolt on the amp to make a spark and maybe reset it, but it didnt work.(btw is that a dumb thing to do?) But do you have any advice to my problem?

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  • 2 more comments 
  • darek678 May 22, 2008

    No, the light stays red. I just now also tried taking out the speaker control wire out of its bolt and the light turned off altogether, and when i put it back in, or even touched it back to its bolt, the light only came back red. Could this be a bad wiring problem within my radio system?

  • darek678 May 23, 2008

    The lights only color on the amp is red?

    There is a yellow wire connecting the amp to the back of my radio system on the deck that says "speaker control" on the amp.

  • darek678 May 23, 2008

    No, i have not yet tried a different speaker....I might tommorow though. I dont really have a blue wire thats able to reach my amp at the moment. Should I buy one? The yellow wire i have now is one that I recieved from my friend to hook up the amp that reaches to my trunk, all the way up under my deck. The only blue wire i was able to find today is about 3 inches long and is bunched up with about 12 other wires to produce the power plug for my deck, but the yellow wire I used has been spliced together with the blue wire and at least the radio seems to be working fine. However my 760W amp still doesn't seem to be doing anything for my 600W pioneer sub.

    Should I have 2 separate wires connecting to the amp, or should i go find a blue wire at an audiostore and use it to go directly to the radio instead?

    But i shall try and plug the amp into a different speaker tommorow if i get it to turn on now. but i'm afraid i dont know anyone atm that has another amp for me to borrow to see if its the faulty wiring.....and as for earlier today while I was inspecting the wiring around my system the power cord for the amp campe in contact with the ground and made a shut off the amp and the light hasn't turned on yet, and i no longer have working turn signals in my car :P

  • Yung Stunter
    Yung Stunter May 21, 2013

    Ok I need help wit my amp when I put the RCA in both light come on and when I unplug it the green light come on so can someone help me with that



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Does the amp power up normally if you disconnect the speaker wires from the speaker terminals of the amp?

It's never a good thing to blindly short across a power source.

Posted on May 22, 2008

  • 1 more comment 
  • Perry Babin May 22, 2008

    It's normal for the light on top of the amp to be on. There's only one color, red.

    What do you mean by 'speaker control wire'? What's the marking on the terminal?

  • Perry Babin May 23, 2008

    From what I can tell from the service manual, there is only one LED and it doesn't appear to be able to produce more than one color.

    The terminal says system control. It should go to the blue wire on the deck. The yellow wire on the deck is constant power (memory) and will cause the amp to remain on always (until the battery runs down).

    Have you tried connecting a speaker that you know to be good to the amp?

    Have you tried plugging the signal source into a different amp to confirm that the head unit is producing output?

  • Perry Babin May 23, 2008

    The color of the wire isn't important. There are common/standard colors used by head unit manufacturers.  When you said you used the yellow wire, I thought you meant you connected the wire feeding the amp to the yellow wire on the head unit. 

    When the wire touched ground, it probably blew a fuse.

    Do yourself a favor and read through the following site. Particularly 14, 19, 22 and 23 (in that order).

    After reading through those pages, let me know if you have more questions.



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Larry T
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