On the Honda 3.5L V6 (and others), the Variable Valve Timing and Lift Electronic Control (VTEC) system boosts performance and ...

When knocking is detected, the engine’s computer can retard the spark plug timing to prevent it. In the event of knock sensor failure ... A check engine light is a likely result.

Perhaps mixing high and low voltages on the same circuit board doesn’t spark your fancy or you can’t modify the light switch in your place of residence? Check out this mechanically-switched ...