Black 7Al-2 Control A Staple In The Drag Race Community, Features A Built-In 2 Step Rev Control And Its Famous High Output Spark Energy. Now In Black MSD IgnitionYou'll recognize the 7AL 2 Plus Ignition Control now in Black! As its predecessor is the most popular ignition control used in drag racing. The Plus model updates the original 7AL 2 with improved internal components plus our engineers added a 2 Step Rev Control and a useful diagnostic LED. Visually, you'll notice the two terminal strips that allow for easier wiring in your race car. The LED over the power connections will come in handy for