Ok so i just got done wiring up all my stuff and all the speaker wire and rca's from the amps are in completely different places than the power wires and i'm still getting engine noise out of the tweets, what do i do?

 

Check all your grounds, and make sure none of your rca's have any bare wire exposed to any metal in the car.
If that still doesnt fix it, check the rca connections on your amps, one of them might be loose (this happened on my friends car and he had to do some solder work to his amp, fixed it right up ).

 

Also, if you're using RCAs with metal heads, make sure they aren't grounding out to anything. When I first did my install I had some engine noise and the RCAs were touching metal behind the head unit, causing the whine.

 

Thanks, i think i may have to cut out that metal bracket thats behind the head unit cuz i kinda had to force the new deck in with the rca's back there.

 

Just figured out the problem, the rca input terminals on on of my apms is hella loose so i have to send it in to get it replaced. Thanks guys