Ballast Resistor for 1994 Dodge Ram 1500 & More - Standard Ignition RU-11

Keep your ignition coil fed with the right amount of current using the Standard Ignition Ballast Resistor RU-11 (also written RU11). It is a direct-fit replacement for the listed applications, which cover many vehicles, among them the 1994 Dodge Ram 1500 3.9L / 5.2L / 5.9L and the 1966-1971 Dodge Charger 3.7L / 4.5L / 5.2L / 5.6L / 5.9L / 6.3L / 7.0L / 7.2L. See the Buyer's Guide tab for the full list.

A ballast resistor sits in the ignition coil's primary circuit. It is designed to reduce the voltage and current reaching the coil while the engine is running, which helps protect the coil and related ignition components from excess load. On many systems it is bypassed during cranking, so the coil receives fuller voltage for starting.

• Part type: Ballast resistor
• Manufacturer part number: RU-11 (RU11)
• Quantity per application: The listed applications use 1
• Coverage: Many decades of classic cars and trucks, including American Motors, Chevrolet, Chrysler, Dodge, Nash, Oldsmobile and Plymouth models

Signs this part may need replacing: The engine fires while cranking but stalls as soon as the key returns to Run. You may also see a no-start condition or a weak or intermittent spark. These symptoms can have other causes, so test the ignition circuit before replacing the resistor.