Installed the TVplus with an aftermarket 2DIN i got from Hk and its working fine pati signal.

Problem ko is how to eliminate the whining sound coming out sa speakers.
Tried relocating every wire naka ilan lipat nako ng locations even the antenna to isolate the problem.

Tried na din the method on youtube na they groud loop the HU using short audio wire pero meron pa din.

Since ang ginamit ko na RCA cable is yung kasama ng kit box, may difference ba kung mag try ako ng branded RCA cable?

Thank you!