Standard Ignition HLS1781 Headlight Switch

Headlight Switch for Ford F-150 and Lincoln Mark LT

Standard Ignition HLS1781 is a plug-in headlight switch built with a female connector, male blade terminals, and a snap-fit attachment method. It features a black plastic finish and is made for direct replacement in select Ford and Lincoln trucks with a matte black finish.

Key Features

• Headlight switch function for exterior lighting control
• 15 terminal blade layout with 2 plug-in connectors
• Female connector gender and male terminal gender
• Snap-fit attachment method for a secure in-dash fit
• Black plastic finish for a factory-style appearance
• Compatible with 2005-2008 Ford F-150 and 2006-2008 Lincoln Mark LT

Detailed Description

Standard Ignition HLS1781 is an electrical headlight switch designed for vehicles that use a plug-in, blade-terminal configuration. The switch is specified with 15 terminals, 2 connectors, and a black plastic finish, making it a practical replacement for the original dash-mounted control. For buyers searching for a 2005-2008 Ford F-150 headlight switch or a 2006-2008 Lincoln Mark LT headlight switch, this part number provides a direct-fit option for the listed applications. This part cross-references 5L3Z11654AAB and S10648 for the same application.

What It Helps Fix

• Headlights that do not turn on or off correctly
• Intermittent lighting control from the dash switch
• Worn or damaged switch contacts
• Loose or unreliable electrical connection at the switch
• Broken or faded original switch appearance

Installation Notes and Tips

Verify connector style, terminal count, and dash opening before installation. This switch uses a plug-in connection with blade terminals and snap-fit attachment, so the existing wiring and mounting style must match the vehicle’s original setup. Confirm fitment for your exact Ford F-150 or Lincoln Mark LT year and trim before ordering. Standard Ignition HLS1781 should be installed in place of the original switch using the vehicle’s factory connector layout.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical replacement parts, and HLS1781 is built to match the listed OE-style application requirements for the specified Ford and Lincoln models.