Rep Power: 0

so a while ago my car gained a noise, the normal ground wire noise, where the whine went up with the motor. so i redid a bunch of stock honda grounds because i heard that they were terrible grounds. redid them with huge wire, even moved some grounds. just recently i got a new amp and new 3 way components. so i hooked up the new amp, and the speakers. and my car developed a new noise, a kind of static noise. system plays fine, and no popping or anything, but the static at a low volume is noticeable. so i rerouted the 12v constant and the ground into the deck, hearing that might be the problem. but neither of these helped. i need help. could i have connected something in the speakers wrong in the crossovers? what could be wrong? rcas? please help. thanks. as i noted before all speakers work 100% fine besides this noise.

 
Rep Power: 812

either your rcas are near the power wire (they should be on separate sides of the car), or moving ground wires around caused it (should leave the wire placement the way it was), or you need to run a constant power directly from the battery to the radio. and a new ground wire from radio to good chassis point with bare metal. check the alternator power wire make sure its tight.

 
Rep Power: 189

there is a capacitor on the alternator wire if that is bad it can cause radio noise at low volumes, by chance did you tie your rcas to the heater blower motor area behind the glove box? the factory blower motor on high can give off interference causing some noise as well.

 
Rep Power: 0

yea rcas are on opposite sides. and speaker wires are down the middle. i only replaced the ground for the battery, just upped the sizes on the stock ones. i grounded the deck to neg terminal didnt change nething, and i ran 12v constant from battery, didnt change nething. could it just be cheap rcas? i have like 12 dollar walmart ones.

 
Rep Power: 189

yeah it is possible, simple check though just pop the deck out and then run new rcas to the sub and check it out without running them if it clears up then your golden. I sincerely hope that you ran you amp power wire through the firewall and through a grommet. I have seen some ppl do some crazy shiz like run it through the door jam (very bad idea). As an added question how many watts and what size power/ground wire did you run for the amp. The rcas should be magnetically sheilded so running it with the power wire should not be an issue I have done it all the time with zero issues mind you I run decent rcas as well. You should never have to run a constant power wire for the deck to the battery unless there is a power problem with the stock wiring. I have heard of ground issues causing noise but that is only if the stock wiring has resistance to ground creating an artificial load. (FYI man ppl have had alternators burning up on them due to this issue a high resistance ground to battery which in your case I doubt very much)