So I installed an aftermarket head unit while retaining the factory amp and speakers. I used the RCA pre-outs to the amp inputs. I’m currently getting engine wine when the engine is on. If the volume is on zero, there is no noise. I ran the head unit ground and the amp ground together. I also ran both grounds to the head unit itself, and also to the vehicle ground with no change. I haven’t tried grounding the RCA’s to each other but before I do, I was wondering if anybody had a solution to this problem.
I do have aftermarket speakers, and willing to bypass the Factory amp, but the OEM system sounds fairly decent, especially with the subwoofer. So I’m seeing if there’s a way to successfully retain it.
I do have aftermarket speakers, and willing to bypass the Factory amp, but the OEM system sounds fairly decent, especially with the subwoofer. So I’m seeing if there’s a way to successfully retain it.
