I have been testing my lights and my new box today and am having some troubles. The lights are making a screaching sound when they are hooked up, and the fuse between the battery and my amp is in,but when the fuse is out they stop making the screaching sound. I dont think it is the ground because it is grounded straight to the battery. what else could it be?

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Storky

Well, I would take the ground from the amp off the battery and attach it to a pure metal surface such as the chassis. Amp's use +12V, remote, and ground wires, not +12, remote, and negative. Negative doesn't constitute as a ground.

If you ever hear a buzz or screeching sound coming from anything electrical, check for a bad ground.

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Deck: Alpine CDA-9856
Front Speakers: Alpine SPS-13C2
Rear Speakers: Alpine SPS-69C2
Amp: Alpine MRPM450 400W Monoblock
Subs: Kicker DC104 Ported with 2 x Kicker Comp 10"
Wiring:Stryker installation kit
Extras: Sony PSP for Portable Movies and MP3, and Sirius StarMate4

ok ill try that. ive just been testing it ouside my car for now, but ill try grounding it to something else

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Storky

i figured it out i had the power wires crossed with some of the speaker wires which was making the noise when the amp turned on

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Storky

Need to clean up those power wires a bit I see.

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Deck: Alpine CDA-9856
Front Speakers: Alpine SPS-13C2
Rear Speakers: Alpine SPS-69C2
Amp: Alpine MRPM450 400W Monoblock
Subs: Kicker DC104 Ported with 2 x Kicker Comp 10"
Wiring:Stryker installation kit
Extras: Sony PSP for Portable Movies and MP3, and Sirius StarMate4

lol ya. i was just testing it in the garage tho so its not like its a crazy messy install

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Storky

guy.... whatever you did that solved the problem.... it was not because you had power wires crossed with speaker wires..... or RCA cables for that matter......

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SIC Audio

I agree and get a fuse between the switch and the + on the battery.