#GROUND LOOP ISOLATOR CAR AUDIO MANUAL#

Edit: I looked at the service manual and it says on page 159 that pin 10 is for a shield. It sounds like a ground loop and makes a ticking noise every 2 seconds and stays the same even at different RPM levels. Let me know and I can make a video of the noise. The noise goes away if I unplug the pre-outs. I'm using the Metra 70-7553 to convert the receivers pre-outs to the factory amp. My car is a 2008 Nissan Altima with factory Bose amplifier. I'm about ready to give up but it might be my amplifier? Any help would be greatly appreciated! Also, when I turn on my lights (doesn't matter if its the parking lights or low beams) I get a high pitch but not that noticeable noise. I have tried another radio (JVC KW-V820BT) and it made the same noise. I want to fix the problem from the source.

I heard they reduce sound quality and are just a band-aid.

I really don't want to use a ground loop isolator. This did nothing so I installed them on the RCA cables and still nothing. So I installed Ferrite beads on the Yellow, red ACC and orange illumination wire power wires. So that makes me think one of the car computers is sending it RF radiation somehow through the wires. I tried leaving the antenna unplugged but still no. The noise is present on all inputs radio, Apple carplay, xm radio and aux. Doesn't matter if the volume is up or down it just stays the same. It does play when the car is in the 'On' position but no engine and with the engine on I get the same noise. The noise doesn't play when the car is in ACC. I do have a good ground and its connected to a bolt that goes into the tube running through the dash. I have a Pioneer 4200nex aftermarket radio and I get this weird clicking noise coming from the front and rear tweeters only.

Ground loop isolator car audio