12-Volt Negative Ground Delivers twice the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life. 2:1 improvement over "points" in current fall time for increased coil output. Rotating cobalt magnets trigger a Hall Effect integrated circuit; no points to burn; no moving parts to wear out. Epoxy molding makes our module impervious to dirt, oil, grease and moisture. Stable timing; no need for any adjustments. Pair with a Flame Thrower Canister Coil for optimal performance