Theory Of Operation

The Totally Integrated Power Module (TIPM) receives a bus message requesting turn signal lamp illumination. When this bus message is received, the TIPM provides a pulsed voltage output through the rear turn signal control circuit. The rear turn signal control circuit connects to the dual filament Park and Turn Signal Bulb in the Lamp, Tail Stop Turn. The same ground circuit is used for both the Park and Turn Signal filaments in a dual filament lamp.