How to ground my Amp on Yaris Hatchback

[RUFFSTUFF]

Originally Posted by talnlnky

...for reducing noise, rca placement has very little difference... the whole car is the ground... and interference can be induced from both the positive & ground... the "ground" in a car isn't a "true" ground there is still voltage and amperage passing through it... its not like a 3 prong plug in a wall outlet which has a pos/neg/gnd. Cars are actually more like pos/neg (ground is kind of a misnomer)...

Actually you are wrong. In your home the 3-prong outlets are POSTIVE/NEUTRAL/GROUND with the larger slot being NEUTRAL. NEUTRAL and GROUND are actually both connected to ground. This is a safety feature that allows a short to the casing of whatever is being powered to trip the breaker.

In a DC system (like a car stereo) ground always has current flowing through it as long as there is a path to the positive power source. In a car most people call it GROUND when referring chassis metal in a negatively grounded electrical system.

Some people advise against routing your RCA cables next to your power cables because the high current the power cables pass may be enough to induce a voltage into the RCA cables which would appear as noise.