MSDIGNITION Ignition Control MSD 6ALNIgnition Control Severe Duty MSD 6ALN Ignition Control Extreme duty 6ALN can handle the harshest racing environments, includes a built-in rev limiter. Originally designed with NASCAR in mind, the 6ALN is equipped with the mandatory 6-Pin Weathertight connector to meet NASCAR's ignition wiring rule, 20-6.1. This special connector provides a tight, positive locking connection with individual seals to keep dirt and moisture away from each connection. All of the MSD's primary wiring meets MIL-86A specifications with special tinned conductors for superior crimps. Inside the strong cast aluminum housing, the multiple sparking CD circuits are encased in a clear two part silicone elastomer for the ultimate in vibration protection. A special clear base plate is also installed for easy tech inspection. The 6ALN has a built-in Rev Control. These rev controls are adjustable with plug-in modules and will save your engine from over-rev damage caused by missed shifts or driveline failure. Works on 12 - 18 volt electrical system Multiple spark, capacitive discharge ignition control Supplied with rubber shock mounts 6-pin Weathertight connector, mandatory for NASCAR use Multiple sparks for 20 degrees of crankshaft rotation Designed for circle track racing with NASCAR mandated connectors and clear epoxy potting compound for vibration protection Circuit board is encased in a clear two part silicone elastomer Built-in Soft Touch Rev Control is adjustable with RPM Modules 470 primary voltage output to coil Supplied with 3,000, 6,000, 7,000 & 8,000 RPM Modules Programmable for 4, 6, or 8-cylinders by cutting red/blue wire loops 110 millijoules per spark up to 15,000 RPM Accepts breaker points, amplifier and magnetic pickup trigger inputs Clear plastic base plate for easy tech inspection