THIS WORKS FOR THE FORD TRACTOR 8N SERIES 500 THRU 900 FOMOCO DISTRIBUTOR 311185 SIDE MOUNT DISTRIBUTOR For over thirty years, the Ignitor has proven itself in applications ranging from race cars to tractors. The Ignitor replaces breaker point and troublesome factory electronic ignitions with a dependable, self contained and maintenance free electronic ignition system. The Ignitor has been called the "stealth" ignition because of its quick installation and nearly undetectable presence under your distributor cap. Specifications Operating Voltage: 8-V to 16-V DC Temperature Range: -50 to 300F RPM Range: 0 to 15,000 RPM 12-V NEG Ground (some 6-V NEG, 6 & 12-V POS ground kits available) System is designed for use with most point-type coils, optimal performance achieved when used with our PERTRONIX COIL Works great in stock point-type distributors as a trigger for multi-spark CD ignitions, eliminating the need for expensive aftermarket distributors. No complicated wiring makes installation easy. A solid-state electronic ignition system. "Never change points again!" 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. Fits entirely inside the distributor. No "black box to clutter the engine compartment. Stable timing ...no need for any adjustments. Will trigger most multi-spark CD ignitions. Available for 6 and 12-volt negative and positive ground systems. Legal in all 50 states and Canada (C.A.R.B. E.O. #D-57-2)