Chrysler Imperial Voltage Regulator Guide for 1962-1966 Models
Keep your Imperial's charging system reliable by understanding its voltage regulator.
- The 1962-1966 Imperial uses an external mechanical voltage regulator that is a common failure point.
- Symptoms of a bad regulator include flickering lights, a repeatedly dead battery, or an overcharging condition with a sulfur smell.
- Upgrading to a modern, solid-state electronic regulator is a popular and recommended modification for improved reliability.
- Before replacing the part, always check that the regulator has a clean, tight ground connection to the firewall.
Understanding Your Imperial's Voltage Regulator
The charging system on your 1962-1966 Chrysler Imperial is a product of its time. It uses an external mechanical voltage regulator. This means it's not part of the alternator itself but a separate box. Its job is to keep the voltage from the alternator steady, typically between 13.8 and 14.5 volts, to properly charge the battery and run your car's lights and accessories. These original mechanical regulators use contact points, similar to a relay, which can wear out or go out of adjustment over time.
Common Failure Symptoms
A failing voltage regulator can cause a range of electrical problems. Paying attention to these signs can prevent you from getting stranded.
- Dimming or Flickering Lights: Headlights and dashboard lights may dim at idle and brighten when you rev the engine. They might also flicker or pulse.
- Battery Problems: A bad regulator can either undercharge or overcharge your battery. An undercharged battery will repeatedly die. An overcharged battery may release a sulfur or rotten egg smell and can be permanently damaged.
- Erratic Ammeter Gauge: The ammeter needle on your dash may swing wildly or show a constant charge or discharge.
- Engine Stalling: Inconsistent voltage can affect the ignition system, leading to rough running or stalling.
A Note on Grounding
Before replacing your regulator, always check its ground connection. The regulator must be securely mounted to the metal firewall to work correctly. A poor ground can mimic the symptoms of a failed part. Clean the mounting points to ensure a good metal-to-metal contact.
Choosing the Right Aftermarket Part
Original Mopar mechanical regulators for this era are no longer made. Your primary choice is a new aftermarket part. For the 1962-1966 Imperial, aftermarket options are generally reliable replacements.
Aftermarket Mechanical vs. Electronic Regulators
You have two main choices when buying a new part:
- Mechanical Replacement: This is a direct, bolt-in replacement for the original part. It looks and functions like the factory unit. For a numbers-matching restoration, this is the correct choice.
- Electronic (Solid-State) Replacement: Many owners choose to upgrade to a modern, solid-state electronic voltage regulator. These are often designed to look like the original mechanical unit but have no moving parts inside. They offer better reliability, more precise voltage control, and are not sensitive to vibration. This is highly recommended if you have converted to an electronic ignition system.
Pro Tip: The Electronic Upgrade
For a daily driver or a car you want to be as reliable as possible, an electronic voltage regulator is a smart upgrade. They are generally inexpensive and provide more stable voltage, which is better for all the car's electrical components, including the battery and ignition system. Some electronic versions are direct plug-and-play replacements for the original mechanical unit.
Brands: Standard Ignition
Standard Ignition (Standard Motor Products) is a well-known aftermarket manufacturer that produces replacement voltage regulators for your Imperial. Their products are widely available and are generally considered a reliable choice for a replacement part. They offer both mechanical-style and electronic solid-state regulators that fit your vehicle.
| Part Type | Average Cost | Notes |
|---|---|---|
| New Aftermarket (Mechanical or Electronic) | $80.97 | This is the most common and recommended option. |
| New OEM | Not Available | Original parts are no longer produced. |
| Used OEM | Varies | Risky due to age and unknown condition. Not recommended. |
Frequently Asked Questions (FAQ)
Is it hard to replace the voltage regulator?
No, this is a very easy job for a DIY mechanic. It typically involves disconnecting the battery, unplugging a wiring connector, and removing two or three mounting screws from the firewall. The entire process can usually be done in about 10-15 minutes with basic hand tools.
Do I need to make wiring changes to install a new regulator?
If you buy a direct-fit replacement (either mechanical or a plug-in electronic version), no wiring changes are needed. However, some universal electronic regulator conversions might require minor rewiring. Always follow the instructions included with the new part.
My lights flicker. Is it the alternator or the regulator?
It could be either, but the voltage regulator is a very common cause and is usually the first part to check. A simple test with a multimeter at the battery terminals can help. With the engine running at a fast idle, a healthy system should show 13.5 to 14.5 volts. If the voltage is too high (over 15 volts) or too low (under 13 volts), or if it fluctuates wildly as you change engine speed, the regulator is the likely suspect.
Are there any recalls for the voltage regulator on my Imperial?
No, there are no specific recalls from the National Highway Traffic Safety Administration (NHTSA) for the voltage regulator on the 1962-1966 Chrysler Imperial. Any issues are related to the age and normal wear of the original components.
Technical Specifications
System Voltage: 12V. Regulation Type: External Mechanical (B-Circuit). Location: Firewall.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.