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I just tried to install a KAC-7204 amp and I hooked the power directly up to the battery and grounded the unit and the power light indicator doesn't come on and no power is coming from the actual amp. What am I doing wrong?

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You need to connect the ACC cable from the head unit to the amp. It is normaly a blue cable, you may have to extend it depending where you have mounted the amp. The ACC cable 'tells' the amp to switch on when the head unit is powered up.

It could also be a blown fuse either on the amp itself or within the wiring for it. You should have used a power cable with a fuse block built into it, check them out.


Let me know how you go.

Posted on Sep 08, 2008


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When i hook my amp up it gives no power to sub and cuts off all audio, why

You mean it cuts off the audio to even your inline speakers? If so then u have a short and its putting your car stereo into protect. Recheck where u spliced into the speaker wire. If even 1 strand of wire is crossed it will cause a short

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on most amp red isnt good that means it in protection mode try turning your setting on the amp down all the way and turn the volume down tell you can get sound out of them then turn up the volume to were you would to them most and set the to what sounds the best but make sure the light doesnt dim down when the base hits

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Kenwood 7204 car amplifier flashes the blue light on top then blows the fuse''

Hello rogman9570,

I'd begin by checking all of the wiring. The most probable causes of this type of failure indication are:

• Speaker wire may be short-circuited.
• Speaker output contacts ground.
• Head unit (cassette receiver, CD receiver, etc.) or the amp ground fails.

If all of your wiring checks out OK, then the amp itself probably has an internal fault.

Hope this helps.

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