Recently purchased a 2001 vmax used 20,000 miles. The Vboost does not work. When power is on, no movement to the v-boost, no noise or anything. Someone installed a toggle switch that leads to this black cap. The Cap is wired to the control unit and back to the first coil and to a wire cluster by the coil. Can anyone identify what this is? Also recommendation on what to test to trouble shoot the Vboost system?