I need help please.

My subs lower in sound when I have the wires bridged to connect but subs with one cord. And when I close the doors it shoots out a steady loud humming noise, but when I open the door it goes away

I installed myself 1 channel amp 500watt Rockford fosgate prime amp with 2 12' subs.
I have my RCA box connected directly into the rear left factory speaker which is hanging directly over the subs in the trunk. I have my remote wire connected to the 7.5a accessory fuse. 2014 Honda Accord sport

 

dude, sorry i missed this. did you find a solution?

The factory radio wire is a good place for a turn-on if your LOC doesn't generate one.

Our cars don't have Retained Accessory Power so are you saying the noise is when the car is on or when the car is off?

disconnecting the ANC is required to prevent humming noise. there is a mic in the rear headliner that is fed from the front driver's a-pillar. You can also just disconnect the ANC module under the radio.