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Standard Ignition DS-300 Headlight Dimmer Switch
Reliable Headlight Dimmer Switch for Ford, Lincoln, and Mercury Vehicles
The Standard Ignition DS-300 headlight dimmer switch is designed to provide dependable lighting control for select Ford, Lincoln, and Mercury models. This new, complete assembly ensures smooth operation of your vehicle's headlight and turn signal functions.
- Direct bolt-on attachment method for easy installation
- Durable aluminum and plastic finish in orange and silver
- Female polygon connectors with 2 cavities and 12 blade terminals
- Includes combination switch functions with turn signal control
- Features latching high beam operator and momentary high beam flasher
- Compatible with Ford Aerostar, Bronco II, Capri, Mustang, Ranger, Thunderbird, and more
Product Details and Features
The DS-300 headlight dimmer switch from Standard Ignition is engineered as a complete assembly, ready to replace your factory switch. It features a bolt-on attachment method for secure mounting and is finished with a combination of aluminum and plastic components in orange and silver colors. The switch includes two female polygon connectors with 12 male blade terminals, ensuring proper electrical connections. This combination switch supports turn signal control, latching high beam operation, and momentary high beam flashing, but does not include cruise control or fog light operators. Indicator markings are not included, focusing on essential lighting functions.
Compatible Vehicles and Applications
This headlight dimmer switch is compatible with a range of Ford, Lincoln, and Mercury vehicles, including models such as the Ford Aerostar, Bronco II, Capri, Escort, Mustang, Ranger, Thunderbird, and the Lincoln Continental, Mark VI, Mark VII, and Town Car. It is designed to meet the electrical and lighting control needs of these vehicles, making it a suitable replacement part for maintaining proper headlight and turn signal operation.
Common Issues Addressed by the DS-300 Switch
- Intermittent or non-functioning high beam or low beam headlights
- Turn signals failing to activate or cancel properly
- High beam flasher not responding or stuck in the on position
- Worn or damaged switch causing unreliable lighting control
- Electrical connection problems due to faulty switch terminals
Installation Notes and Tips
Installation of the Standard Ignition DS-300 headlight dimmer switch requires removal of the existing switch assembly. The bolt-on attachment method allows for straightforward mounting. Ensure connectors are properly aligned with the female polygon connectors and that all 12 blade terminals are securely engaged. It is recommended to verify all lighting functions after installation to confirm correct operation. Professional installation is advised if unfamiliar with vehicle electrical systems.
Quality Assurance and Warranty
Standard Ignition provides this DS-300 headlight dimmer switch as a new, complete assembly built to meet OEM specifications. The part undergoes quality control to ensure reliable performance and durability. Warranty coverage details should be confirmed at the point of purchase, typically including protection against manufacturing defects for a specified period.
| Brand | Standard Ignition |
| Part Number | DS-300 |
| Attachment Method | Bolt On |
| Color | Orange, Silver |
| Connector Gender | Female |
| Connector Shape | Polygon |
| Contents | Switch |
| Cruise Control Cancel Included | No |
| Cruise Control On/Off Operator Inc | No |
| Cruise Control Resume Included | No |
| Cruise Control Set Included | No |
| Cruise Control Speed Adjustment In | No |
| Displayed | Yes |
| Finish | Aluminum, Plastic |
| Fog Light Operator Included | No |
| Functions | Combination Switch |
| Indicator Markings Included | No |
| Latching High Beam Operator Includ | Yes |
| Main Light Operator Included | No |
| Momentary High Beam Flasher Includ | Yes |
| New or Reman | New |
| Notes | Complete Assembly |
| Number Of Connector Cavities | 2 |
| Rear Window Washer Spray Included | No |
| Rear Window Wiper Delay Control In | No |
| Rear Window Wiper Speed Setting In | No |
| Running Light Operator Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Turn Signal Control Included | Yes |
| Turn Signal/Directional Indicator | No |
| Voltage | 12 |
| Windshield Washer Spray Included | No |
| Windshield Wiper Delay Setting Inc | No |
| Windshield Wiper Speed Setting Inc | No |
This part fits 106 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1989 | Ford | Aerostar | N/A | |||
| 1989 | Ford | Bronco II | N/A | Floor Shift | ||
| 1989 | Ford | Ranger | N/A | Floor Shift | ||
| 1988 | Ford | Aerostar | 3.0L | V6 | N/A | |
| 1988 | Ford | Bronco II | N/A | Floor Shift | ||
| 1988 | Ford | Ranger | N/A | Floor Shift | ||
| 1987 | Ford | Aerostar | 2.3L | L4 | N/A | |
| 1987 | Ford | Aerostar | 3.0L | V6 | N/A | |
| 1987 | Ford | Bronco II | N/A | Floor Shift | ||
| 1987 | Ford | Ranger | N/A | Floor Shift | ||
| 1986 | Ford | Bronco II | N/A | Floor Shift | ||
| 1986 | Ford | Ranger | N/A | Floor Shift | ||
| 1985 | Ford | Bronco II | N/A | Floor Shift | ||
| 1985 | Ford | Ranger | N/A | w/ Floor Shift | ||
| 1984 | Ford | Bronco II | N/A | Floor Shift | ||
| 1984 | Ford | LTD | N/A | w/o Flash To Pass | ||
| 1984 | Ford | Ranger | N/A | |||
| 1984 | Lincoln | Mark VII | N/A | w/o Auto Headlight Dimmer | ||
| 1984 | Lincoln | Town Car | N/A | w/o Auto Headlight Dimmer | ||
| 1984 | Mercury | Capri | N/A | w/o Flash To Pass | ||
| 1984 | Mercury | Grand Marquis | N/A | w/o Flash To Pass | ||
| 1983 | Ford | Escort | N/A | w/o Flash To Pass; Dimmer And Turn Signal Switch | ||
| 1983 | Ford | Fairmont | N/A | w/o Flash To Pass | ||
| 1983 | Ford | LTD | N/A | w/o Flash To Pass | ||
| 1983 | Ford | Mustang | N/A | w/o Flash To Pass | ||
| 1983 | Ford | Ranger | N/A | |||
| 1983 | Ford | Thunderbird | N/A | w/o Flash To Pass | ||
| 1983 | Lincoln | Mark VI | N/A | w/o Auto Headlight Dimmer | ||
| 1983 | Lincoln | Town Car | N/A | w/o Auto Headlight Dimmer | ||
| 1983 | Mercury | Capri | N/A | w/o Flash To Pass | ||
| 1983 | Mercury | Zephyr | N/A | w/o Flash To Pass | ||
| 1982 | Ford | Fairmont | N/A | w/o Flash To Pass | ||
| 1982 | Ford | LTD | N/A | |||
| 1982 | Ford | Mustang | N/A | w/o Flash To Pass | ||
| 1982 | Ford | Thunderbird | N/A | w/o Flash To Pass | ||
| 1982 | Lincoln | Mark VI | N/A | w/o Auto Headlight Dimmer | ||
| 1982 | Lincoln | Town Car | N/A | w/o Auto Headlight Dimmer | ||
| 1982 | Mercury | Capri | N/A | w/o Flash To Pass | ||
| 1982 | Mercury | Cougar | N/A | w/o Flash To Pass | ||
| 1982 | Mercury | Zephyr | N/A | w/o Flash To Pass | ||
| 1981 | Ford | Fairmont | N/A | w/o Flash To Pass | ||
| 1981 | Ford | LTD | N/A | |||
| 1981 | Ford | Mustang | N/A | w/o Flash To Pass | ||
| 1981 | Ford | Thunderbird | N/A | w/o Flash To Pass | ||
| 1981 | Lincoln | Mark VI | N/A | w/o Auto Headlight Dimmer | ||
| 1981 | Lincoln | Town Car | N/A | w/o Auto Headlight Dimmer | ||
| 1981 | Mercury | Capri | N/A | w/o Flash To Pass | ||
| 1981 | Mercury | Cougar | N/A | w/o Flash To Pass | ||
| 1981 | Mercury | Grand Marquis | 4.2L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Grand Marquis | 5.0L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Grand Marquis | 5.8L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Marquis | 4.2L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Marquis | 5.0L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Marquis | 5.8L | V8 | N/A | w/o Flash To Pass |
| 1981 | Mercury | Zephyr | N/A | w/o Flash To Pass | ||
| 1980 | Ford | Fairmont | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1980 | Ford | Fairmont | N/A | |||
| 1980 | Ford | LTD | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1980 | Ford | LTD | N/A | |||
| 1980 | Ford | Mustang | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1980 | Ford | Mustang | N/A | |||
| 1980 | Ford | Pinto | 2.3L | L4 | N/A | |
| 1980 | Ford | Thunderbird | N/A | w/ Column Mounted | ||
| 1980 | Ford | Thunderbird | N/A | |||
| 1980 | Lincoln | Continental | N/A | |||
| 1980 | Lincoln | Continental | N/A | w/o Auto Headlight Dimmer | ||
| 1980 | Lincoln | Mark VI | N/A | w/o Auto Headlight Dimmer | ||
| 1980 | Mercury | Capri | N/A | w/o Flash To Pass | ||
| 1980 | Mercury | Cougar | N/A | w/o Flash To Pass | ||
| 1980 | Mercury | Grand Marquis | 5.0L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Grand Marquis | 5.8L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Marquis | 5.0L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Marquis | 5.8L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Monarch | 4.1L | L6 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Monarch | 4.2L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Monarch | 5.0L | V8 | N/A | w/o Flash To Pass |
| 1980 | Mercury | Zephyr | N/A | w/o Flash To Pass | ||
| 1979 | Ford | Fairmont | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1979 | Ford | Fairmont | N/A | |||
| 1979 | Ford | LTD | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1979 | Ford | LTD | N/A | |||
| 1979 | Ford | Mustang | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1979 | Ford | Mustang | N/A | |||
| 1979 | Ford | Pinto | 2.3L | L4 | N/A | |
| 1979 | Ford | Pinto | 2.8L | V6 | N/A | |
| 1979 | Ford | Thunderbird | 5.0L | V8 | N/A | |
| 1979 | Ford | Thunderbird | 5.8L | V8 | N/A | |
| 1979 | Mercury | Capri | 2.3L | L4 | N/A | |
| 1979 | Mercury | Capri | 2.8L | V6 | N/A | |
| 1979 | Mercury | Capri | 3.3L | L6 | N/A | |
| 1979 | Mercury | Capri | 5.0L | V8 | N/A | |
| 1979 | Mercury | Cougar | N/A | |||
| 1979 | Mercury | Grand Marquis | 5.0L | V8 | N/A | |
| 1979 | Mercury | Grand Marquis | 5.8L | V8 | N/A | |
| 1979 | Mercury | Marquis | 5.0L | V8 | N/A | |
| 1979 | Mercury | Marquis | 5.8L | V8 | N/A | |
| 1979 | Mercury | Zephyr | N/A | |||
| 1978 | Ford | Fairmont | N/A | Column Mounted - fits vehicles with headlight dimmer switch located on the steering column | ||
| 1978 | Ford | Fairmont | N/A | |||
| 1978 | Ford | LTD | N/A | |||
| 1978 | Ford | Pinto | 2.3L | L4 | N/A | |
| 1978 | Ford | Pinto | 2.8L | V6 | N/A | |
| 1978 | Ford | Thunderbird | 5.0L | V8 | N/A | |
| 1978 | Ford | Thunderbird | 5.8L | V8 | N/A | |
| 1978 | Ford | Thunderbird | 6.6L | V8 | N/A | |
| 1978 | Mercury | Zephyr | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.