Bypass Series Regulator Rectifier Assorted BMW (RMS021-108592)The failure prone harnesses on BMWs are known to develop corrosion which increases electrical resistance, which in turn, increases the temperature of wires to the point where connectors start melting. When this happens, the voltage regulator (and most likely the stator) is failing, incurring steep repair expenses. RMSTATOR's new bypass voltage regulator brings back the renowned RMSTATOR Series technology designed to bypass the main wiring harness and