This MSD 7222 7AL-2 Plus Ignition Control has all of the features of the standard 7AL-2, with the addition of a built-in 2 Step Rev Control! This unit also has a useful diagnostic LED, and delivers over 570 volts to the coil with up to 160mJ of spark energy for every firing! The 7AL-2 Plus provides improved throttle response, idle and launch consistency as well as off-corner performance! Two terminal strips allow for ease of wiring, and the soft touch rev control protects the engine from damage due to over-revving. Adjustments are made easily with MSD’s plug in modules. This ignition is compatible on 4-, 6-, as well as 8-cylinder engines with negative ground electrical systems. It will accept trigger inputs from breaker points, amplifiers, as well as magnetic pickups. Wiring harness, vibration mounts as well as all components needed for installation are included. MSD 7222 7AL-2 Plus Ignition Control Features: Ignition Box Color: Gold Ignition Box Output: Capacitive Discharge Rev Limiter: Yes Circuitry: Analog Spark Output: 160 mJ Current Draw: 1 Amp per 1,000 RPM RPM Range: 14,000 RPM with 14.4 Volts CD Voltage Output to Coil: 570 Volts Secondary Voltage: 47,000 Volts Voltage Required: 12-18 Volts Built-in LED for diagnostic system checks Timing Retard: No Data Acquisition: No Coil Included: No Length: 8.250 in. Width: 3.750 in. Height: 5.750 in. Compatible with 4-, 6- as well as 8-cylinder engines Quantity: Sold Individually From street cruisers to Top Fuel dragsters, MSD's ignition systems have been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.