-to-adjust digital rev limiter 4,500 to 12,000 RPM - no chips required! Works with ... variety of functions from turning in a light bulb to activating an MSD Timing ... Driver wires inline to the coils shared 12 volt supply wire. It senses the current ... and converts this information into a 12 volt output signal that most ... controlled circuitry. Easy to install. Lightweight aluminum housing maximum heat transfer ... -adjust digital rev limiter - 4,500 to 12,000 RPM no chips required! Latest ... -controlled circuitry Easy to install. Lightweight aluminum housing maximum heat transfer ... -controlled circuitry Easy to install Lightweight aluminum housing maximum heat transfer ... a cap featuring deeply molded internal voltage dams to prevent cross firing, brass ... traditional ACCEL Tan, as well as Red, Blue and Black. Fits all GM HEI in-cap coil ...