Hello everyone im running stinger amplifiers I recently added some amp feet and a couple brushless turbo style fans to keep sub amp cool. Initial install went well and amp no longer overheats. After a few weeks went by I noticed some noise when vol at zero with car off there was a wine. I disconnect all the rcas from headunit and to my shock noise was still there. The only thing that stops the noise was either disconnecting all rcas from the amps or shutting down the amps. I wired fan - to amp ground and + to remote wire. Is there a simple way to fix this issue. I tried moving fan - directly to battery negative post or frame ground but noise was still there. Appreciate all the info and advice.