Channels change randomly when volume is turned up
I finally got my AVH-X3500BHS installed almost all the way. But I ran into a problem. As soon as I start turning up my volume past 15 on FM or Sirius the stations automatically change by themselves until they come across one that doesn't have as powerful bass/treble. If I play a CD it will change to a different mode altogether. I've wrapped each wire on the harnesses I installed individually. I was thinking while wrapping that frequency shouldn't play a part in this because all the wires that go to the OEM radio are wrapped in 3 bundles and I never had this issue with that. It must be something with the harnesses that I got for the head unit, but unsure as to what.
Any thoughts? If you'd like I can post up a video of the problem.
2x Rockford Fosgate P3D410
Rockford Fosgate T600-2
Soon to go in:
2x Rockford Fosgate P1652-S component speakers
Rockford Fosgate T400-4
2011 KIA Forte Koup SX