Homeβ€Ί Electrical, Lighting and Body > Switchesβ€Ί Standard Ignition DS-300 Headlight Dimmer Switch
Part #: DS-300

Standard Ignition DS-300 Headlight Dimmer Switch

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πŸš—Fitment: Ford, Lincoln, and Mercury, Aerostar, Bronco II, Ranger, LTD, Mark VII, Town Car, Capri, Grand Marquis, Escort, EXP, Fairmont, Mustang, Thunderbird, Mark VI, Zephyr, Granada, Cougar, Marquis, Pinto, Continental, Monarch, LTD II, and Mustang II
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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.

BrandStandard Ignition
Part NumberDS-300
Attachment MethodBolt On
ColorOrange, Silver
Connector GenderFemale
Connector ShapePolygon
ContentsSwitch
Cruise Control Cancel IncludedNo
Cruise Control On/Off Operator IncNo
Cruise Control Resume IncludedNo
Cruise Control Set IncludedNo
Cruise Control Speed Adjustment InNo
DisplayedYes
FinishAluminum, Plastic
Fog Light Operator IncludedNo
FunctionsCombination Switch
Indicator Markings IncludedNo
Latching High Beam Operator IncludYes
Main Light Operator IncludedNo
Momentary High Beam Flasher IncludYes
New or RemanNew
NotesComplete Assembly
Number Of Connector Cavities2
Rear Window Washer Spray IncludedNo
Rear Window Wiper Delay Control InNo
Rear Window Wiper Speed Setting InNo
Running Light Operator IncludedNo
Terminal GenderMale
Terminal TypeBlade
Turn Signal Control IncludedYes
Turn Signal/Directional IndicatorNo
Voltage12
Windshield Washer Spray IncludedNo
Windshield Wiper Delay Setting IncNo
Windshield Wiper Speed Setting IncNo

This part fits 106 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1989FordAerostarN/A
1989FordBronco IIN/AFloor Shift
1989FordRangerN/AFloor Shift
1988FordAerostar3.0LV6N/A
1988FordBronco IIN/AFloor Shift
1988FordRangerN/AFloor Shift
1987FordAerostar2.3LL4N/A
1987FordAerostar3.0LV6N/A
1987FordBronco IIN/AFloor Shift
1987FordRangerN/AFloor Shift
1986FordBronco IIN/AFloor Shift
1986FordRangerN/AFloor Shift
1985FordBronco IIN/AFloor Shift
1985FordRangerN/Aw/ Floor Shift
1984FordBronco IIN/AFloor Shift
1984FordLTDN/Aw/o Flash To Pass
1984FordRangerN/A
1984LincolnMark VIIN/Aw/o Auto Headlight Dimmer
1984LincolnTown CarN/Aw/o Auto Headlight Dimmer
1984MercuryCapriN/Aw/o Flash To Pass
1984MercuryGrand MarquisN/Aw/o Flash To Pass
1983FordEscortN/Aw/o Flash To Pass; Dimmer And Turn Signal Switch
1983FordFairmontN/Aw/o Flash To Pass
1983FordLTDN/Aw/o Flash To Pass
1983FordMustangN/Aw/o Flash To Pass
1983FordRangerN/A
1983FordThunderbirdN/Aw/o Flash To Pass
1983LincolnMark VIN/Aw/o Auto Headlight Dimmer
1983LincolnTown CarN/Aw/o Auto Headlight Dimmer
1983MercuryCapriN/Aw/o Flash To Pass
1983MercuryZephyrN/Aw/o Flash To Pass
1982FordFairmontN/Aw/o Flash To Pass
1982FordLTDN/A
1982FordMustangN/Aw/o Flash To Pass
1982FordThunderbirdN/Aw/o Flash To Pass
1982LincolnMark VIN/Aw/o Auto Headlight Dimmer
1982LincolnTown CarN/Aw/o Auto Headlight Dimmer
1982MercuryCapriN/Aw/o Flash To Pass
1982MercuryCougarN/Aw/o Flash To Pass
1982MercuryZephyrN/Aw/o Flash To Pass
1981FordFairmontN/Aw/o Flash To Pass
1981FordLTDN/A
1981FordMustangN/Aw/o Flash To Pass
1981FordThunderbirdN/Aw/o Flash To Pass
1981LincolnMark VIN/Aw/o Auto Headlight Dimmer
1981LincolnTown CarN/Aw/o Auto Headlight Dimmer
1981MercuryCapriN/Aw/o Flash To Pass
1981MercuryCougarN/Aw/o Flash To Pass
1981MercuryGrand Marquis4.2LV8N/Aw/o Flash To Pass
1981MercuryGrand Marquis5.0LV8N/Aw/o Flash To Pass
1981MercuryGrand Marquis5.8LV8N/Aw/o Flash To Pass
1981MercuryMarquis4.2LV8N/Aw/o Flash To Pass
1981MercuryMarquis5.0LV8N/Aw/o Flash To Pass
1981MercuryMarquis5.8LV8N/Aw/o Flash To Pass
1981MercuryZephyrN/Aw/o Flash To Pass
1980FordFairmontN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1980FordFairmontN/A
1980FordLTDN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1980FordLTDN/A
1980FordMustangN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1980FordMustangN/A
1980FordPinto2.3LL4N/A
1980FordThunderbirdN/Aw/ Column Mounted
1980FordThunderbirdN/A
1980LincolnContinentalN/A
1980LincolnContinentalN/Aw/o Auto Headlight Dimmer
1980LincolnMark VIN/Aw/o Auto Headlight Dimmer
1980MercuryCapriN/Aw/o Flash To Pass
1980MercuryCougarN/Aw/o Flash To Pass
1980MercuryGrand Marquis5.0LV8N/Aw/o Flash To Pass
1980MercuryGrand Marquis5.8LV8N/Aw/o Flash To Pass
1980MercuryMarquis5.0LV8N/Aw/o Flash To Pass
1980MercuryMarquis5.8LV8N/Aw/o Flash To Pass
1980MercuryMonarch4.1LL6N/Aw/o Flash To Pass
1980MercuryMonarch4.2LV8N/Aw/o Flash To Pass
1980MercuryMonarch5.0LV8N/Aw/o Flash To Pass
1980MercuryZephyrN/Aw/o Flash To Pass
1979FordFairmontN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1979FordFairmontN/A
1979FordLTDN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1979FordLTDN/A
1979FordMustangN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1979FordMustangN/A
1979FordPinto2.3LL4N/A
1979FordPinto2.8LV6N/A
1979FordThunderbird5.0LV8N/A
1979FordThunderbird5.8LV8N/A
1979MercuryCapri2.3LL4N/A
1979MercuryCapri2.8LV6N/A
1979MercuryCapri3.3LL6N/A
1979MercuryCapri5.0LV8N/A
1979MercuryCougarN/A
1979MercuryGrand Marquis5.0LV8N/A
1979MercuryGrand Marquis5.8LV8N/A
1979MercuryMarquis5.0LV8N/A
1979MercuryMarquis5.8LV8N/A
1979MercuryZephyrN/A
1978FordFairmontN/AColumn Mounted - fits vehicles with headlight dimmer switch located on the steering column
1978FordFairmontN/A
1978FordLTDN/A
1978FordPinto2.3LL4N/A
1978FordPinto2.8LV6N/A
1978FordThunderbird5.0LV8N/A
1978FordThunderbird5.8LV8N/A
1978FordThunderbird6.6LV8N/A
1978MercuryZephyrN/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:

123216731S48354K353-16979D8BC13B302AADL6200DL6200SBDS115DS123SM71FUDS425

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.