MAA-700 Brand: Mallory Product Line: Mallory Ignition Coil Ballast Resistors Resistance: 0.75-1.50 ohms Quantity: Sold individually. Ballast Resistor, 0.75-1.5 Ohms, Variable Resistance, Each Protect your ignition from burnout. These Mallory heavy-duty porcelain resistors feature a 0.75-1.50 ohm and a 200-watt rating, and use threaded terminal connections for better wire retention. They are available for most standard point-type or electronic ignitions. The resistors have variable resistance values for improved cold weather starting.