Can anyone help me install noise filters to keep electrical noise out of my audio system on my Ultra? I have a Kennedy Cell Set installed which interfaces my cell phone into the intercom, but I don't think that's the problem. I'm getting alternator whine, ignition click, turn signal hum, and brake light pop coming into my headset! I tried cleaning up my ground connection but that didn't help. HELP!

 

try and see if you can find the autolight resistor plugs.

 

Personally I think you are better off fixing this at source. Try taking the mods you have done out the system and see if you can find what is causing this. I run a fairly standard system although I am powering numerous devices and I have no whine whatsoever.

Noise suppression is fairly tricky and you run a very real risk of throwing good after bad