Question about Kenwood KAC-7202 Car Audio Amplifier

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Battery hook-up RV application. 4 AWG power and ground wires with no inline fuses. I did not do the original installation. I was having trouble distinguishing power and ground lines when I inadvertently touched the positive amp wire to the negative battery pole and got a spark. The negative side of the amp was tied to chassis ground. I then went to install the positive wire from the amp onto the positive pole of the battery. When I did this, I got another spark. Don't want to secure the positive cable until I figure out why I'm getting a spark when properly installing the wires to the battery. Any ideas? Thanks

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You must have inline fuses at the point where the wire taps off of the power source. If you're tapping off a wire that has no fuse (like the starter solenoid), you must insert a fuse.

When making the connection to the amp, there will be a spark initially. If you hold it on for a second, pull it off and then touch it again, there should be little to no spark because the capacitors in the amplifier would have charged when you made the initial contact. If there is an intense spark each time you touch it and the amp is not on (no remote voltage applied), the amp may be defective.

Let me know if you have any other questions.

Posted on Aug 18, 2008

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I have my cb grounded and a wire ran to the postive side of my battery terminal and the antenna wire ran and my cbs channels wont come up we thought it was jus my cb so we hooked another up and it did the...


Hello,

Here is the deal, even with out antennas hooked up, you should get at least your channels on your cb showing, no of course you would have all noise and distortion with out antennas hooked up. And sense you hooked another cb up with same results it tells me, number one, it is not most likely your cb. If your channels are not even lighting up, then this tells me it is not getting power. I know you said that the cb is grounded, and there is a wire ran to the positive post of the battery. What I would do first of all make sure proper wire on cb is grounded and not reversed accidentally, but what i believe is your not getting power to the unit, if it was properly installed, there should be a inline fuse from the cb radio to the positive post the wire is connected to on the battery. I believe there is a inline fuse that is blow, or not a good connection on the post of the battery. To test this theory, take a long piece of same size wire gauge, and run direct from positive on battery to positive post on battery, of course making sure that the proper wire off the cb is grounded (must be grounded to something metal, might find different spot to ground the radio if not for sure on metal) If you get lights going on then on radio, then your problem, was not a good connection or inline fuse on positive wire that maybe you didn't see was blown. Let me know Mike

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1 Answer

Just installed new steam shower, it produces steam for about 5 minutes and then blows the fuse


Based from your comments, a new steam shower that blows the fuse in five minutes. You could have installed a new steam shower that is much bigger than what you previously have.
1. For a 5000 watts steam shower at 220 volts
power must have a fuse rating of 40 amps, supply
wires of at least No. 6 AWG Type THW ; and at
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Supply wire: No. 10 AWG type THW. At 110volts
60 amps, Supply wires : No. 4 AWG Type THW
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1 Answer

When i hook up my 750 watt inverter to my truck do i need to install a isolator or inline fuse? or just connect the 4 gauge battery cables directly to the battery and the inverter?


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With a 5500 watt amplifier you should be running 0 awg wire . You also need to be running an anl fuse holder with a 250 amp fuse underneath the hood by your battery. When the power light blinks like that it means that it needs more power - ie. that there is resistance some where in the system . With 4 gauge wire it just isn't getting what it needs. Make sure you upgrade the ground as well to 0 awg . If you have any other questions please feel free to contact me mmaudio545@yahoo.com

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1 Answer

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1 Answer

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1 Answer

I bought a 2400 watt punch 801s amp that has two power out and two ground outs i've hooked up only one power and one ground and the amp comes on but as soon as i touch the speacker wire to it it hits one...


Check the gauge on the wiring. For that size amp you would need to use 0 AWG wire for the power, the speaker wire is just signal wire so you want to use regular speaker wire. (I have 12 AWG setup for speaker wires) What the two power ports (Neg and Pos) do is increase the amount of flow. Two power wires to distribute the flow of the current so you don't burn up your wires if your pumping too much juice. I started off with this exact amp running a single 8 AWG and split it into two and it burned up and blew a fuse after a couple of huge bass hits. So proper setup would be....
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Be careful you don't burn out your alternator, this bad boy can cause some serious problems with a lower amp alternator. Let me know how it works out.

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2 Answers

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