I just recently switched out my amp and relocated it to the back wall. Before this setup I had a kicker 600 watt mono amp under the rear seat. now Im running a 1200 watt pioneer mono and its mounted on the back wall. when I have my cell phone in the truck, I get that weird static interference. I only hear it when the volume is turned down on the h/u and it is not extremely loud but it defiantly is VERY noticeable. I never had it before on the old amp and the only thing i changed was I added a fuse-able distribution block to extend the power wire I already had, and I now have relocated the ground to the seat mounting bolts. My ground is very good. Besides those two things, nothing has changed. any suggestions? I'm lost. thanks for anyone's help!

 

are u sure its only when phone is in truck, also some people say on here that isnt a good grounding spot. is the amp mounted to the metal?

 

check your wiring to your battery it could be a bit loose.

 

My amp is mounted to the metal on the back wall and also all wiring is tight all the way to the batt. terminal. I am going to do the big 3 sometime today to try to cancel out some of the dimming...maby that will do something. On another forum, they were talking about how its a "RF" issue and it has something to do with the length of speaker wires and nothing to do with the power/ground. they recommended ferrite beads. I just now learned what they were all about so dont feel bed haha. they clamp right on to your wiring and supposedly eliminate RF signal threw your wires.

 

do you have a factory hu or aftermarket if aftermarket what kind? if factory how do you have the amp rca's connected to it?

 

I have a aftermarket H/U. Its the pioneer avhp4000dvd. I do not think it has anything to do with the H/U itself because It was just fine before with the old amp and sub combo. Also, when It does make the frequency noise, its comming from the back seats...(subwoofers). I still have not tried ferrite beads yet...

 

is the sub amp the only one connected to the hu in the truck?