OE Quality
60-Day Returns

Standard Ignition HLS-1638 Headlight Switch
Overview of Standard Ignition Headlight Switch HLS-1638
The Standard Ignition headlight switch HLS-1638 is designed specifically for Volkswagen Eos models. This 12-volt headlight switch features a durable black plastic finish and a snap-fit attachment method for straightforward installation and reliable performance.
- Compatible with Volkswagen Eos vehicles
- 12-volt electrical rating
- 9 male pin terminals for secure connections
- Single female rectangular connector
- Direct snap-fit attachment for easy installation
- Black plastic finish with matching black knob
Detailed Product Description
The Standard Ignition HLS-1638 headlight switch is engineered to meet the electrical and lighting control needs of Volkswagen Eos models. It features nine male pin terminals arranged to ensure proper connectivity and a single female rectangular connector that simplifies wiring integration. The switch’s black plastic housing and knob provide a consistent appearance with the vehicle’s interior components. Its direct snap-fit attachment method allows for a secure and tool-free installation, reducing service time and minimizing the risk of improper mounting.
Common Applications and Issues Addressed
- Replacement for faulty or worn headlight switches in Volkswagen Eos
- Resolves intermittent headlight operation or failure to turn on
- Fixes issues with dimmer or headlight control malfunction
- Restores proper electrical connection in the lighting circuit
- Eliminates problems caused by damaged or corroded terminals
Installation Notes and Tips
- Ensure vehicle battery is disconnected before installation to prevent electrical shorts
- Verify the 9-pin male terminal configuration matches the vehicle wiring harness
- Use the snap-fit attachment method to secure the switch firmly in place
- Check for proper alignment of the rectangular female connector before connecting
- Test headlight operation after installation to confirm functionality
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The HLS-1638 headlight switch undergoes rigorous quality control to ensure reliable performance in Volkswagen Eos vehicles. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use.
| Brand | Standard Ignition |
| Part Number | HLS-1638 |
| Attachment Method | Direct, Snap Fit |
| Color | Black |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Finish | Plastic |
| Knob Color | Black |
| Terminal Gender | Male |
| Terminal Type | Pin |
| Voltage | 12 |
This part fits 2 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2008 | Volkswagen | Eos | N/A | For vehicles equipped with automatic headlights |
| 2007 | Volkswagen | Eos | N/A | For vehicles equipped with automatic headlights |
* 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.