Standard Ignition RU-4 Ballast Resistor

Reliable Ballast Resistor for Chrysler, Dodge, Ford, and More

The Standard Ignition RU-4 ballast resistor is designed to provide consistent ignition system performance for a range of vehicles including Chrysler, Dodge, Ford, Jeep, Lincoln, Mercury, and Plymouth models. Engineered with durable blade terminals and a female connector, this ballast resistor ensures secure electrical connections and reliable operation.

• Connector Gender: Female for easy plug-in installation
• Terminal Type: Two male blade terminals for secure wiring
• Terminal Quantity: 2 terminals to support ignition circuit requirements
• Mounting Bracket: Not included, allowing flexible mounting options
• Compatible with multiple makes and models including Dodge Caravan, Ford Thunderbird, Jeep Wagoneer, and Plymouth Duster

Durable Design and Electrical Compatibility

The RU-4 ballast resistor from Standard Ignition is built to meet OEM specifications for primary ignition systems. Its female connector and two male blade terminals provide a reliable interface for ignition wiring harnesses. The absence of a mounting bracket allows installers to position the resistor in the most suitable location within the engine bay. This part is engineered to maintain proper voltage regulation to the ignition coil, helping to prevent coil overheating and ensuring consistent spark delivery.

Compatible Vehicles and Applications

This ballast resistor is compatible with a wide range of vehicles, including Chrysler models like the New Yorker and Imperial, Dodge vehicles such as the Charger and Ramcharger, Ford trucks including the F-series (D100, D150, D250, D350), Jeep Wagoneer and CJ5, as well as Lincoln and Mercury models. The RU-4 part number is a direct replacement for ignition systems requiring a ballast resistor with female connectors and blade terminals.

Common Issues Addressed by the RU-4 Ballast Resistor

• Prevents ignition coil overheating by regulating voltage
• Eliminates intermittent ignition failures caused by faulty resistors
• Restores proper spark timing and engine performance
• Reduces electrical resistance issues in primary ignition circuits
• Helps resolve starting difficulties related to ignition voltage drops

Installation Notes and Tips

When installing the Standard Ignition RU-4 ballast resistor, ensure the female connector is securely attached to the corresponding male plug in the vehicle’s wiring harness. Verify that the two male blade terminals are properly connected to the ignition coil circuit. Since this resistor does not include a mounting bracket, select a mounting location that avoids excessive heat and vibration. Use appropriate hardware or clamps to secure the resistor and prevent movement during vehicle operation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards for fit, form, and function. The RU-4 ballast resistor undergoes rigorous quality control to ensure reliable performance in primary ignition systems. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship to provide confidence in the product’s durability and longevity.