Dorman 639-048 Automatic Transmission Indicator Light Bulb

Reliable Automatic Transmission Indicator Light Bulb for Ford, Lincoln, and Mercury

The Dorman 639-048 automatic transmission indicator light bulb provides consistent illumination for your vehicle's instrument panel. Designed specifically for select Ford, Lincoln, and Mercury models, this 12-volt incandescent mini bulb ensures clear visibility of your transmission status.

• 12-volt incandescent mini bulb with 1.8-watt power rating
• White light color for clear transmission indicator visibility
• Glass lens material for durability and optimal light output
• Low amperage draw of 0.15 amps for efficient electrical performance
• Compatible with multiple Ford, Lincoln, and Mercury models including F-150, Mustang, Navigator, and more
• Includes one replacement bulb per package

Technical Details and Compatibility

The Dorman 639-048 bulb is engineered to meet the electrical and lighting requirements of various Ford, Lincoln, and Mercury vehicles. Its mini incandescent design operates at 12 volts and 1.8 watts, providing a reliable white light output for automatic transmission indicator panels. The glass lens enhances light clarity and protects the filament, while the low amperage draw helps maintain your vehicle's electrical system efficiency. This bulb is compatible with models such as the Ford F-150, Mustang, Escape, and Expedition, as well as Lincoln Navigator and Mercury Cougar, among others.

Common Applications and Problem Resolution

• Replaces burnt-out or dim automatic transmission indicator bulbs
• Restores clear visibility of transmission gear position on instrument clusters
• Eliminates flickering or inconsistent indicator lighting
• Prevents dashboard warning light confusion due to faulty bulbs
• Maintains proper instrument panel illumination for safe vehicle operation

Installation Notes and Tips

Installation of the Dorman 639-048 bulb is straightforward and typically requires access to the instrument cluster. Before installation, ensure the vehicle ignition is off to avoid electrical shock. Carefully remove the old bulb by twisting or pulling it from the socket, depending on your vehicle model. Insert the new bulb securely, making sure it is properly seated to avoid loose connections. Test the bulb by turning on the ignition and verifying the transmission indicator light illuminates correctly.

Quality Assurance and Warranty Information

Dorman manufactures the 639-048 bulb to meet or exceed OEM specifications for electrical lighting components. The use of quality glass lens material and precise filament construction ensures consistent performance and durability. This bulb is backed by Dorman's standard warranty coverage, providing confidence in its reliability and fitment for your Ford, Lincoln, or Mercury vehicle.