Standard Ignition DS-603 Headlight Dimmer Switch

Headlight Dimmer Switch for Ford Vans

Standard Ignition DS-603 is a headlight dimmer switch built for Ford full-size vans and Aerostar applications that use the listed 18-terminal configuration. It combines turn signal control, windshield wiper delay, wiper speed, and washer spray functions in one replacement switch for service-focused repairs.

Key Features

• Fits select 1992-1997 Ford Aerostar and 1992-1996 Ford E-Series van applications, including E-150, E-250, and E-350 models
• Headlight dimmer switch with turn signal control included
• Windshield wiper delay setting, wiper speed setting, and washer spray functions
• 7 windshield wiper delay settings and 3 wiper speed settings
• Latching high beam operator and momentary high beam flasher included
• 2 female rectangular connectors, 18 blade terminals, bolt-on attachment
• Black plastic finish, 12-volt electrical design
• New part from Standard Ignition, part number DS-603

Detailed Description

Standard Ignition DS-603 is engineered for direct replacement in select Ford steering column switch applications where the headlight dimmer, turn signal, and wiper controls are integrated. It is built with copper alloy conductors for strong electrical conductivity and reduced resistive loss, and each unit is tested for mechanical and electrical switching performance before release. This part cross-references Standard Ignition S3223 for the same application.

Compatible With 1999 Ford E-350 Econoline and 1999 Ford E-350 Econoline Club Wagon, 18 Term. Compatible With 1992-1997 Ford Aerostar, w/ Auto Headlight Dimmer. Compatible With 1992-1996 Ford E-150 Econoline, 1992-1996 Ford E-150 Econoline Club Wagon, 1992-1996 Ford E-250 Econoline, 1992-1996 Ford E-350 Econoline, and 1992-1996 Ford E-350 Econoline Club Wagon, including turn signal and wiper switch applications.

Common Problems This Part Can Address

• Intermittent or inoperative high beam switching
• Wiper delay or speed control failure
• Washer spray switch malfunction
• Turn signal control issues at the steering column
• Worn or damaged multi-function switch contacts

Installation Notes and Tips

Verify the vehicle’s connector style, terminal count, and listed fitment before installation. This DS-603 uses a bolt-on attachment method with female rectangular connectors and male blade terminals, so matching the original switch configuration is important for proper operation. Confirm the vehicle’s existing functions and options, especially on Ford E-Series and Aerostar models with integrated dimmer and wiper controls.

Quality Assurance

Standard Ignition builds this switch with robust materials and tests each unit for both electrical and mechanical switching performance. The design reflects long-term development focused on technician requirements and service replacement reliability.