Standard Ignition HLS1780 Headlight Switch

Headlight Switch for Ford F-150 and Lincoln Mark LT

Restore reliable lighting control with this Standard Ignition headlight switch, part number HLS1780. It is built with a black plastic finish, a snap-fit attachment method, and two plug-in connectors for a direct electrical connection in the vehicle dash harness.

Fits 2005-2008 Ford F-150, w/ Auto Headlights; w/ Fog Lights. Fits 2006-2008 Lincoln Mark LT, w/ Auto Headlights; w/ Fog Lights.

Key Features

• Standard Ignition HLS1780 headlight switch
• 15 blade terminals for the specified electrical interface
• Female connector with male terminals
• 2 plug-in connectors for straightforward harness connection
• Snap-fit attachment for secure dash installation
• Black plastic construction and finish

Detailed Description

The Standard Ignition HLS1780 is a replacement headlight switch for select Ford and Lincoln trucks equipped with automatic headlights and fog lights. It is specified with 15 terminals, blade-type terminals, and a female connector layout with male terminals, matching the electrical requirements of the original switch application. This part cross-references 4L3Z11654CAA for the same application.

Use HLS1780 when servicing the lighting control circuit on a 2005-2008 Ford F-150 or a 2006-2008 Lincoln Mark LT with the listed equipment. The part number HLS1780 is also useful when searching for a direct replacement headlight switch for these Ford F-150 and Lincoln Mark LT applications.

What It Helps Fix

• Headlights that do not switch on or off correctly
• Fog light control issues at the dash switch
• Intermittent lighting operation caused by worn switch contacts
• Loose or unreliable electrical connection at the switch
• Dash lighting control problems related to the headlight switch assembly

Installation Notes and Tips

Verify the vehicle is equipped with auto headlights and fog lights before ordering. Match the connector style, terminal count, and attachment method to the original switch before installation. Confirm fitment for your Ford F-150 or Lincoln Mark LT by model year and equipment level, then transfer the electrical connection carefully to avoid terminal damage.

Quality Assurance

Standard Ignition supplies replacement electrical components for service applications, and this switch is built to match the listed connector and terminal specifications for the stated vehicles. Confirm all fitment details against the original part number HLS1780 and the vehicle’s lighting equipment before installation.