100% ground wire. Could be amp ground, HU ground or a random ground loop. It is usually the amp or HU (headunit) ground since the static noise starts once aftermarket radio equipment is installed.Nice job man! I get some speaker noise with engine acceleration, kinda sounds like a wind up toy, is it related to the small ground cable?
Anyone know if a thread exists for that?
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Big3 is to give more power from alt, battery etc...