OE Quality
60-Day Returns

Standard Ignition HLS-1645 Instrument Panel Dimmer Switch
Overview of Standard Ignition Instrument Panel Dimmer Switch
The Standard Ignition HLS-1645 instrument panel dimmer switch is designed specifically for GMC Acadia models. This direct snap-fit switch offers reliable control over your dashboard lighting, ensuring optimal visibility and comfort while driving.
- Direct, snap fit attachment method for secure installation
- Single female rectangular connector for easy wiring
- Black knob color for a factory-matched appearance
- 16 male pin terminals supporting 12-volt electrical systems
- Compatible with GMC Acadia instrument panel lighting systems
Detailed Product Description and Attributes
The Standard Ignition HLS-1645 instrument panel dimmer switch features a direct snap-fit attachment method, allowing for straightforward replacement without additional hardware. It includes one female rectangular connector designed to interface seamlessly with the vehicle’s wiring harness. The switch is equipped with 16 male pin terminals, supporting a 12-volt electrical system typical of GMC Acadia models. The black knob maintains the original interior aesthetic, providing a consistent look and feel within the instrument panel.
Compatible Vehicles and Applications
This instrument panel dimmer switch is compatible with GMC Acadia vehicles, ensuring proper fitment and function. It is intended for use in controlling the brightness of the instrument panel lighting, helping drivers adjust visibility according to ambient lighting conditions.
- Restores dimmer functionality for dashboard lighting
- Resolves issues with unresponsive or flickering instrument panel lights
- Corrects problems related to inconsistent brightness adjustment
- Replaces worn or damaged dimmer switches in GMC Acadia
Installation Notes and Tips
Installation of the Standard Ignition HLS-1645 dimmer switch is simplified by its direct snap-fit design. Before installation, disconnect the vehicle battery to prevent electrical shorts. Carefully remove the existing dimmer switch by releasing the snap-fit attachment, then connect the new switch’s female rectangular connector to the wiring harness. Ensure all 16 male pin terminals are properly seated to maintain electrical integrity. Reconnect the battery and test the dimmer switch operation before reassembling the instrument panel.
Quality Assurance and Warranty Information
Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The HLS-1645 instrument panel dimmer switch undergoes rigorous quality control to ensure proper fit and function in GMC Acadia vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.
| Brand | Standard Ignition |
| Part Number | HLS-1645 |
| Attachment Method | Direct, Snap Fit |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Knob Color | Black |
| Terminal Gender | Male |
| Terminal Type | Pin |
| Voltage | 12 |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2013 | GMC | Acadia | N/A | w/o Heated Windshield Washer; w/o Fog Lights |
| 2012 | GMC | Acadia | N/A | Not compatible with vehicles equipped with Fog Lights. |
| 2012 | GMC | Acadia | N/A | w/o Heated Windshield Washer; w/o Fog Lights |
| 2011 | GMC | Acadia | N/A | Not compatible with vehicles equipped with Fog Lights. |
| 2011 | GMC | Acadia | N/A | w/o Heated Windshield Washer; w/o Fog Lights |
| 2010 | GMC | Acadia | N/A | Not compatible with vehicles equipped with Fog Lights. |
| 2010 | GMC | Acadia | N/A | w/o Heated Windshield Washer; w/o Fog Lights |
* 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.