Tectary Auto Start Stop Eliminator for Ford F-150 2015-2020 — A-OFF Plug-and-Play Harness, Easy Install

If your Ford F-150 (including STX, XLT and 2017 Raptor) restarts the engine stop feature every time you start the truck, this harness remembers and re-applies the A-OFF state so you don’t have to press the button repeatedly. The unit is a factory-friendly, non-destructive solution: no cutting or reprogramming is required and it connects to the original plug behind the dashboard panel.

Will this harness work with my Ford F-150 model and A-OFF button placement?

Compatibility depends on model year and the physical location of the A-OFF button. The harness fits Ford F-150 trucks from 2015 through 2020, including many STX and XLT trims and the 2017 Raptor, but only where the A-OFF button sits in the center of the panel.

• Designed specifically for Ford F-150 2015–2020 models.
• Compatible with common trims like STX, XLT and the 2017 Raptor.
• Requires the A-OFF button to be centered on the dash panel—verify location before purchase.

How does installation work and do I need special tools or coding?

Installation is intended to be simple and reversible: the harness connects to the factory plug without cutting wires or using dealer-level programming. A trim removal tool is included so you can access the switch panel and attach the harness quickly.

• Plug-and-play connection to the original A-OFF socket—no wire splicing.
• Included disassembly tool for safe panel removal.
• No impact on remote start or other factory settings.

What does the eliminator actually do when installed?

Once installed the harness sets the A-OFF function automatically every time the vehicle is started, restoring your preferred off state for the start-stop system. If you ever want the factory behavior back, simply press the A-OFF button manually to reactivate the feature.

• Stores the A-OFF selection and reapplies it at each ignition cycle.
• If a reset is needed, turning the engine off and on or pressing the button restores normal behavior.
• Does not interfere with other OEM electronics or remote start functions.

Is the unit durable and reliable in typical truck conditions?

The harness is built from flame-retardant materials with temperature and water resistance in mind, and it uses a dual-core terminal chip for steadier performance under variable conditions. That construction helps the module withstand automotive heat and the demands of daily use.

• Durable, high-temperature- and water-resistant housing.
• Dual-core chip for consistent electrical performance.
• Engineered to be non-invasive and easy to remove if necessary.

Who is this for? The Tectary Auto Start Stop Eliminator is ideal for F-150 owners who prefer to keep the automatic start-stop disabled without repeated button presses—especially commuters, towing drivers, or anyone in stop-and-go traffic who finds the engine cycle intrusive. Verify your truck’s model year (2015–2020) and confirm the A-OFF button is centered on the dash before purchasing. If you want a reversible, factory-safe way to remember your A-OFF preference, this harness provides a straightforward, low-effort option.