MSD Digital 6AL Ignition Controllers # MSD6425Ignition Box, MSD 6AL, Digital CD, with Rev Limiter, Red, EachIgnition Box Output:Capacitive discharge Circuitry:Digital Rev Limiter:Yes Timing Retard:None Data Acquisition:No CD Voltage Output to Coil:520-540 V Current Draw:0.7 amps per 1,000 rpm Spark Output (millijoules):135-145 Millijoules Minimum Operating Voltage:12 V Maximum Operating Voltage:15 V Length (in):8.000 in. Height (in):2.250 in. Width (in):4.000 in. Ignition Box Color:Red Coil Included:No Advance with the digital power of your popular favorite--MSD 6AL ignitions. With less power draw and higher output, MSD moves you with "the fire to drive" in a digital powerhouse! Inside microprocessors, updated circuits and efficient components monitor and handle every firing and rev limit to produce more power while pulling less current. Don't worry; features that made their 6AL boxes your first choice remain but with improved output--more than135mJ of spark energy for every firing with 530+ volts to the coil! And, to go with the new power, a new look. These digital 6AL ignition controllers are sleek with a lower profile. Wiring is routed out one end through a sealed and locked connector and two rotary dials to set rpm limit are positioned right on top--easier installation, super easy access and a clean, neat appearance under the hood. Controllers are supplied with wiring harness and components you need for install plus, vibration mounts. Increased output and proven multiple-spark power--MSD digital 6AL ignition controllers are a definite win-win!